Question: The specific heat of substance veries with temperature according to equation $C=2T\times { 10 }^{ -3 }cal/gK$ (T is absolut temperature). The amount of heat raquired to raise the temperature of 100 g of substance from ${ 27 }^{ 0 }C$ to ${ 47 }^{ 0 }C$ is


Question: The () of workers belongs to the tangible wear and tear of labor.


Question: Dodder, a fully parasitic plant growing in salt marshes, can severely suppress the growth of dominant species in this habitat. How might this affect the composition of plant species in the habitat?

G) Enhance the richness of plant species.

Choices:
Completely Transform the Plant Community Structure
Dependent on other environmental variables


Question: Most of the carbon in our bodies originated in().


Question: In a 1-2 type shell-and-tube heat exchanger with a heat transfer area of 5 m$^{2}$, hot water outside the tubes is cooled by cold water inside the tubes. The heat transfer coefficient $K=1.4\times10^3$ W·m$^{-2}$·K$^{-1}$. The flow rates and inlet temperatures of the cold and hot water are as follows: $q_{m,2}=1\times10^4$ kg·h$^{-1}$, $q_{m+1}=5\times10^3$ kg·h$^{-1}$, $T_1^{\prime}=20$°C, $T_1=100$°C. What is the heat transfer calculated using the logarithmic mean temperature difference method?

Power Engineering and Engineering Thermophysics


Question: A major polling organization wants to predict the outcome of an upcoming national election (in terms of the proportion of voters who will vote for each candidate). They intend to use a 95% confidence interval with margin of error of no more than 2.5%. What is the minimum sample size needed to accomplish this goal?


Question: A long string having a cross-sectional area $0.80 \,mm^2$and density, $12.5 \,g / cm^3$ is subjected to a tension of $64 \,N$ along the  x-axis. One end (at x = 0) of this string is attached to a vibrator moving in transverse direction at a frequency of $20 \,Hz.$ At $t = 0$, the source is at a maximum displacement $y = 1.0 \,cm.$What is the velocity of this particle at this instant?


Question: In a parallel plane electrostatic field, if a certain part of the boundary line coincides with an electric field intensity line, how should the boundary condition for this segment of the boundary line be expressed?

I) $$
\varepsilon{\frac{\partial\varphi} {\partial n}}=0
$$

Choices:
$$
\varepsilon{\frac{\partial\varphi} {\partial t}}=0
$$
$$
\varepsilon{\frac{\partial^2\varphi} {\partial n^2}}=0
$$
$$
\varepsilon{\frac{\partial\varphi} {\partial\theta}}=0
$$
$$
\varepsilon_{r}\frac{\partial\varphi} {\partial t}=0
$$
$$
\varepsilon{\frac{\partial\varphi} {\partial n}}=0
$$
$$
\frac{\partial\varphi} {\partial t}=0
$$

Electromagnetic Field and Microwave Technology


Question: What radio show was the most listened-to program in the United States in the 1980s?


Question: If the probabilities of random events $A$ and $B$ are respectively $P(A) = 0.6$ and $P(B) = 0.5$, then what is the relationship between $A$ and $B$?

Choices:
Inclusion of events A and B Events contain A
The opposite events of event B contain A
Inclusion of events A and B Events contain B
The opposite events of event A contain B


Question: In PHC how to dispose placenta-

Choices:
Chemical treatment followed by deep burial


Question: The area enclosed by the parabola \( y^2 = 2px \) and the normal line at the point \(\left(\frac{p}{2}, p\right)\) is \( \) .


Question: Compute the volume percent of graphite, $v_{G}$ in a 2.5 wt% C cast iron, assuming that all the carbon exists as the graphite phase. Assume densities of 7.9 and 2.3 g/$cm^3$ for ferrite and graphite, respectively.


Question: In 2020, what percentage of people were of Malay descent according to Singapore's census?


Question: "The Lord Is My Firm Support" was created by ________.


Question: The radiation power of a certain antenna is 50 W, and the average power density in the far field at a distance of 1 km in its maximum radiation direction is 0.5 mW/m². If the radiation power remains unchanged and the original antenna is replaced with an elementary dipole, how many times is the average power density of the original antenna at 1 km in the maximum radiation direction compared to that of the elementary dipole?

Information and Communication Engineering


Question: A failed attempt at committing a crime means ().

I) The necessary elements for a specific crime were not completed

Choices:
The crime was aborted before being fully executed
The basic structures for illicit activity collapsed
The criminal act was not fully carried out
The detailed plan for the crime fell through
The repercussions of the crime were greatly reduced
The critical segments for the very crime were lacking
The unlawful actions were interrupted beforehand
The necessary elements for a specific crime were not completed


Question: The principle of enhancing or weakening radiation heat transfer is to change () and ().

C) System blackness, temperature conditions

Choices:
System blackness, temperature conditions
Object thickness, environmental humidity

Power Engineering and Engineering Thermophysics


Question: Which company initially synthesized thalidomide?


Question:
Consider a 30 km-long rectangular tidal bay with a uniform depth of 20 m. The tidal pattern is semi-diurnal, with a tidal range of 6 m at the bay's apex. Calculate the maximum tidal current velocity at the bay's mouth and the maximum tidal amplitude at the bay's apex. Use the following assumptions:
- \( A = 3 \, \text{m} \), \( h = 20 \, \text{m} \), \( T = 12 \, \text{h} 24 \, \text{min} = 44640 \, \text{s} \)
- The wave propagation speed is given by \( c = \sqrt{gh} \).
- Wavelength \( \lambda = cT \).
- Tidal current velocity is \( u = -A \sqrt{\frac{g}{h}} \cos \left( \frac{2\pi x}{\lambda} \right) \sin \left( \frac{2\pi t}{T} \right) \).
- Tidal amplitude at the bay's apex is \( \zeta = A \sin \left( \frac{2\pi x}{\lambda} \right) \cos \left( \frac{2\pi t}{T} \right) \).

E) Maximum velocity: \( 0.63 \, \text{m/s} \), Maximum amplitude: \( 5.72 \, \text{m} \)

Choices:
Maximum velocity: \( 0.60 \, \text{m/s} \), Maximum amplitude: \( 5.50 \, \text{m} \)
Maximum velocity: \( 0.62 \, \text{m/s} \), Maximum amplitude: \( 5.60 \, \text{m} \)
Maximum velocity: \( 0.63 \, \text{m/s} \), Maximum amplitude: \( 5.50 \, \text{m} \)
Maximum velocity: \( 0.55 \, \text{m/s} \), Maximum amplitude: \( 5.40 \, \text{m} \)
Maximum velocity: \( 0.63 \, \text{m/s} \), Maximum amplitude: \( 5.72 \, \text{m} \)
Maximum velocity: \( 0.70 \, \text{m/s} \), Maximum amplitude: \( 6.00 \, \text{m} \)
Maximum velocity: \( 0.50 \, \text{m/s} \), Maximum amplitude: \( 5.20 \, \text{m} \)
Maximum velocity: \( 0.68 \, \text{m/s} \), Maximum amplitude: \( 5.90 \, \text{m} \)
Maximum velocity: \( 0.64 \, \text{m/s} \), Maximum amplitude: \( 5.70 \, \text{m} \)
Maximum velocity: \( 0.65 \, \text{m/s} \), Maximum amplitude: \( 5.80 \, \text{m} \)


Question: In the quote "吾闻汉购我头千金,邑万户" the word "购" means ()


Question: The ( ) of the function $f(x)=x+sin x$.

A) The convex interval is $(2n\pi,(2n+1)\pi)$, the concave interval is $((2n-1)\pi,2n\pi)$

Choices:
The convex interval is $(2n\pi,(2n+1)\pi)$, the concave interval is $((2n-1)\pi,2n\pi)$
The convex interval is $(n\pi,(n+1)\pi)$, the concave interval is $((n-1)\pi,n\pi)$
The convex interval is $((2n-1)\pi,2n\pi)$, the concave interval is $(2n\pi,(2n+1)\pi)$
The convex interval is $((n-1)\pi,n\pi)$, the concave interval is $(n\pi,(n+1)\pi)$
The convex interval is $((2n-2)\pi,(2n-1)\pi)$, the concave interval is $((2n-1)\pi,2n\pi)$


Question: Regarding the stroma of the tumor, which statement is correct?


Question: The coordinates of the southwest corner of a 1:2000 real estate map are x=3948Km and y=(35)126Km, what is the complete and abbreviated numbering of the map in terms of the numbered area code for that map?

Surveying and Mapping Science and Technology

Cartography and Geographic Information Engineering


Question: A sample of chalcanthite ($\mathrm{CuSO}_{4} \cdot \mathrm{5H}_{2} \mathrm{O}$) weighing $0.5180 \ \mathrm{g}$ was analyzed using an iodometric titration method. At the endpoint of the titration, $18.58 \ \mathrm{mL}$ of $\mathrm{Na}_{2} \mathrm{S}_{2} \mathrm{O}_{3}$ standard solution was consumed. When the $\mathrm{Na}_{2} \mathrm{S}_{2} \mathrm{O}_{3}$ solution was standardized with $\mathbf{K}_{2} \mathbf{Cr}_{2} \mathbf{O}_{7}$, it was found that $41.22 \ \mathrm{mL}$ of $\mathbf{Na}_{2} \mathbf{S}_{2} \mathbf{O}_{3}$ solution corresponded to $0.2121 \ \mathrm{g}$ of $\mathbf{K}_{2} \mathbf{Cr}_{2} \mathbf{O}_{7}$. Calculate the content of $\mathrm{CuSO}_{4} \cdot \mathrm{5H}_{2} \mathrm{O}$ in the sample is().($M_{\mathrm{K_{2}Cr_{2}O_{7}}} = 294.2$, $M_{\mathrm{CuSO_{4} \cdot 5H_{2}O}} = 249.7$)


Question: We now define an algorithm: The definition of a(n) is the number of Baxter permutations of length n (Baxter numbers). Baxter permutations are permutations that avoid the patterns 2-14-3 and 3-41-2. Given the input x_list (a series of values): [15, 16, 17, 18, 19, 20, 21, 22, 23, 24], determine the corresponding output sequence y_list.


Question: The principle of amino acid paper chromatography is based on differences in ___.

A) Distribution coefficient of mixed amino acids in two immiscible solvents

Choices:
Distribution coefficient of mixed amino acids in two immiscible solvents
Separation rate of mixed amino acids in dual phases
Binding affinity of amino acids in two immiscible solvents
Movement speed of different amino acids in mobile phase
Optical density measurements of amino acids in visible light
Interaction intensity of amino acids with a stationary phase
Molecular weight of various amino acids in stationary phase
Reaction velocity of amino acids with a developer
Solubility rate of individual amino acids in a single solvent
Permeability factor of various amino acids in one solvent


Question: A rope of length L and mass M is being pulled on a rough horizontal floor by a constant horizontal force $F=Mg$. The force is acting at one end of the rope in the same direction as the length of the rope. The coefficient of kinetic friction between rope and floor is $1/2$. Then, the tension at the midpoint of the rope is


Question: At what distance from the centre of the earth, the value of acceleration due to gravity g will be half that on the surface ( R = radius of earth)


Question: State one important reason why Smith's principle of the "invisible hand" does not assure the "perfect functioning," without government intervention, of the U.S. economy today.

A) Perfect competition is required for Smith's principle to be completely effective

Choices:
Perfect competition is required for Smith's principle to be completely effective
The "invisible hand" only works in non-technological markets
The principle is based on global, not national, economies
The "invisible hand" is countered by the presence of monopolies and oligopolies
Smith's principle does not account for externalities affecting the economy
Government intervention is always necessary
Smith's principle assumes all actors have perfect information
Smith's principle relies on the assumption of unlimited natural resources
Smith's principle only applies to certain markets


Question: Calculate the maximum and minimum number of electrons. Which may have magetic quantum number m = +1 and spin quantum $s=\cfrac { 1 }{ 2 } $ in Chromium (Cr) :


Question: Estimate the mean ionic activity coefficient and activity of a solution that is 0.015 mol kg$^{-1}$ Mg$F_{\mathrm{2}}$(ac) and 0.025 mol kg$^{-1}$ NaCI(aq).


Question: The foundation has a rectangular base, with an additional base pressure of 200 kPa. Below the base, there is a $2.5 \mathrm{m}$ thick layer of silty clay followed by a very thick layer of dense sand. It is known that the natural unit weight of the silty clay is $19 \mathrm{kN/m^{3}}$, the average void ratio is 0.750, the average coefficient of compressibility is $0.25 \mathrm{MPa}^{-1}$, and the additional stress coefficient at a depth of $2.5 \mathrm{m}$ below the center of the base is 0.48. If the deformation of the dense sand is disregarded, calculate the consolidation settlement of this foundation.(Note: For calculation, consider the foundation soil as a single layer.)


Question: Find the first-order best uniform approximation polynomial of the function $f(x) = \sqrt{1 + x^2}$ on the interval $\left[ 0, 1 \right]$, and determine its deviation as ____.


Question: Compared with the near-surface air, the content of () in soil air is not significantly different.

Atmospheric Physics and Atmospheric Environment


Question: Assume all gases are perfect unless stated otherwise. Unless otherwise stated, thermodynamic data are for 298.15 K. Calculate the final pressure of a sample of carbon dioxide that expands reversibly and adiabatically from $57.4 \mathrm{kPa}$ and $1.0 \mathrm{dm}^3$ to a final volume of $2.0 \mathrm{dm}^3$. Take $\gamma=1.4$.


Question: What does aesthetic judgment often go beyond?


Question: Under normal circumstances, the lower borders of both lungs are roughly the same, situated at the ____ intercostal space along the midclavicular line, the ____ intercostal space along the midaxillary line, and the _____ rib at the scapular line.


Question:
Three moles of an ideal gas $\left (C_{P} = \dfrac {7R}{2}\right )$ at pressure $P_{A}$ and temperature $T_{A}$ is isothermally expanded to twice the initial volume. The gas is then compressed at constant pressure to its original volume. Finally the gas is heated at constant volume to its original pressure $P_{A}$.
Calculate the net work done by the gas and the net heat supplied to the gas during the complete process.


Question: Mass spectrometry is the process of analyzing samples in a mass spectrometer by vaporizing them at high temperatures, generating ions that are impacted by a certain amount of energy in the ion source, and then separated in order by mass-to-nuclear ratio and expressed by the detector. The following options do not belong to the type of mass spectrometry ion source: __. I. Electron bombardment II Fourier transform III. Chemical ionization IV. Fast atom bombardment


Question:
The permissible deviation of raw materials by weight is specified in the concrete mixing operation, including cement and admixture
What is the allowable deviation of?


Question: Which of the following about geochemical province is correct?

A) In a certain large area of the Earth's crust, certain components are particularly enriched, with not only one or two types of rocks showing especially high element abundance, but also deposits of these elements often appearing in groups, resulting in a particularly high occurrence rate

Choices:
In a certain large area of the Earth's crust, certain components are particularly enriched, with not only one or two types of rocks showing especially high element abundance, but also deposits of these elements often appearing in groups, resulting in a particularly high occurrence rate
Within a vast segment of the Earth's crust, multiple substances are distinctly deficient, presenting only a handful of rock forms that reveal exceedingly low element concentrations, thereby leading to a notably low frequency of these deposits.
Across a broad segment of the Earth's crust, various substances are excessively abundant, including numerous rock forms showcasing elevated element levels, thereby generating a commonly high rate of occurrences.
Within a limited region of the Earth's core, specific substances are considerably enriched, exhibiting a few rock types with high elemental concentrations, thus leading to a frequently high occurrence rate.
Within a vast section of the Earth's core, several substances are notably enriched, including diverse rock forms exhibiting elevated elemental concentrations, thus resulting in a frequently high occurrence rate.
Within a vast region of the Earth's mantle, several components are substantially enriched, featuring not only multiple rock types demonstrating high elemental presence, but also these elements frequently appearing in clusters, thus indicating a significantly high occurrence rate.
In a specific ample zone of the Earth's crust, some minerals are markedly depleted, with only one or two kinds of rocks demonstrating notably low element levels, and deposits of these elements seldom manifest, consequently showing a particularly low occurrence rate.
Within an extensive zone of the Earth's core, specific elements are unusually scarce, encompassing only a few varieties of minerals that show remarkably low elemental presence, hence displaying a really low occurrence.
In a broad expansive area of the Earth's mantle, different constituents are notably concentrated, possessing not only several rock types with increased elemental quantity, but also clusters of these elements regularly surfacing, thus indicating a considerably high presence.
Within a broad region of the Earth's mantle, distinct substances are notably depleted, including several kinds of minerals exhibiting reduced elemental concentrations, thus producing a decreased frequency of occurrences.


Question: After activation, it can promote the transduction of T cell activation signal, and the PIK associated with the CD4/CD8 cytoplasmic region is ().


Question: From what school did Phyllida Barlow graduate in 1966?

Choices:
the Central Saint Martins College of Art and Design
the Slade School of Fine Arts and Design


Question: Japan's national land development plan is based on which law?

B) National Land Development Planning Act

Choices:
National Land Development and Planning Regulation
National Land Development and Planning Act (1967)
National Land Development and Planning Act (1968)
National Land Development and Planning Act
National Land Development and Planning Act (1970)
National Land Development and Planning Act (1969)
National Land Development and Planning Law


Question: Let $f(x)$ be a monotonically decreasing function on $(0,+\infty)$. Then ()


Question: The colonial spider (Metepeira incrassata) is a social species of spider. Individuals located on the edges of the colony have a higher rate of food capture, but their risk of predation is three times that of individuals in the center of the colony. Based on the above information, please determine which of the following statements about the distribution of different individuals in the colony is correct.

E) Mature spiders of larger size are located at the center of the group.

Choices:
Mature spiders of smaller size are located along the edges of the group.
Smaller young spiders are distributed in the center of the group.
Mature spiders that are relatively small in size are distributed along the edges of the group.
Larger young spiders are distributed in the center of the group.
Mature spiders of larger size are located at the center of the group.
Mature spiders of larger size are distributed along the edges of the group.
Mature spiders of smaller size are distributed at the center of the group.
Smaller spiders of larger size are located at the center of the group.
Smaller young spiders are located along the edges of the group.
Larger young spiders are distributed along the edges of the group.


Question: The following statements about the replication of Escherichia coli DNA are correct ( ).

Choices:
Necessitates the exchange of histone proteins.
Necessitates 4 types of RNA-supported precursors.
not Involves the formation of a DNA primer.
Requires the creation of 5 types of polypeptides.
not Involves the degradation of RNA primers.


Question: Calderas are formed by which of the following causes?

H) Following the sudden outbreak, there was a downturn.

Choices:
Rapid cooling leading to surface depression
Continuous eruptions disrupting geographical layers
Massive land displacement during eruptions
Subsequent collapse after the peak explosion
Following the sudden outbreak, there was a downturn.
Lava accumulation spewing from the edge fissures

Mineralogy, Petrology, and Economic Geology


Question: ______ regulation goes further than the ______ that CSOs have with businesses, as it also concerns _______of such processes.


Question: The mass ratio of objects A, B, and C is 1:2:3. If their kinetic energy is equal and the braking force acting on each object is the same, what is the ratio of their braking distances?


Question: Foraminal brain herniation leads to?


Question: the magnetic needles has magnetic moment $6.7 \times {10^{ - 2}}\;A{m^2}$ and moment of inertia $I = 7.5 \times {10^{ - 6}}\;kg{m^2}$ . It performs 10 complete oscillations in 6.70 s. What is the magnitude of the magnetic field?


Question: Country A is a Member State of the United Nations. In 2006, a United Nations agency in country A, on behalf of the United Nations, signed an agreement with the Government of country A to purchase a batch of office supplies. Due to the delay in the delivery of country A, a dispute arose between the two parties. Which of the following options is correct under the Charter of the United Nations and the relevant rules of international law?

A) The above-mentioned acts on behalf of the United Nations shall be considered to be common to all States Members of the United Nations

Choices:
The above-mentioned acts on behalf of the United Nations shall be considered to be common to all States Members of the United Nations
The General Assembly of the United Nations shall have the right to request an advisory opinion from the International Court of Justice in respect of the dispute, whether or not State A agrees to it
The Security Council may impose a binding obligation on any State to submit to the jurisdiction of the International Court of Justice without the consent of that State
Purchases by the United Nations are automatically deemed to be the same obligations of all Member States
As a political international organization, the above-mentioned purchase by the United Nations organization shall be invalid ab initio
The General Assembly of the United Nations shall have the right to institute proceedings against State A before the International Court of Justice in respect of the dispute, with or without the consent of State A
The Secretary-General of the United Nations may bring proceedings concerning disputes directly before the International Court of Justice without the authorization of any body
The judgment of the International Court of Justice shall be binding on either party to the dispute without prior confirmation of its jurisdiction
As an international organization, all acts of the United Nations are not subject to the laws of any State
All decisions of the United Nations shall be considered legally binding without procedural review


Question: A pulley in the form of a uniform disc of mass $2\ m$ and radius $r$ free to rotate in a vertical plane about a fixed horizontal axis through its centre. A light inextensible string has one end fastened to a point on the rim of the pulley and is wrapped several times round the rim. The portion of string not wrapped round the pulley id of length $8r$ and carries a particle of mass $m$ at its free end. The particle is held close to the rim of the pulley and level with its centre. If the particle is released from this position, then initial angular velocity of the pulley is $\omega$ and the impulse of the sudden tension in the string when it becomes taut is $J$, then


Question: At what temperature, hydrogen molecules will escape from the earth's surface? (TAke mass of hydrogen molecule $=0.34\times{10}^{-6}kg$, Boltzmann constant $=1.38\times{10}^{-23}K{J}^{-1}$, Radius of earth $=6.4\times{10}^{6}m$ and acceleration due to gravity $=9.8m{s}^{-2}$)


Question: Determine the period of oscillation of mercury of mass m = 200g poured into a bent tube whose right arm forms an angle $\theta$ = 30 with the vertical. The cross-sectional area of the tube S = 0.50 $cm^{2}$. The viscosity of mercury is to be neglected.


Question: Let $P_n(x)=1+x+x^2+\cdots+x^n$ and $Q_n(x)=P_1\cdot P_2\cdots P_n$ for all integers $n\ge 1$ . How many more distinct complex roots does $Q_{1004}$ have than $Q_{1003}$ ?


Question: A transverse wave propagating on the string can be described by the equation y = 2 sin (10x + 300t), where x and y are in metres and t in second. If the vibrating string has linear density of 0.6 x $10^{-3}$ g/cm, then the tension in the string is


Question: $10\ lt$. box contains $O_{3}$ and $O_{2}$ at equilibrium at $2000\ K$. The $\triangle G^{\circ} = -534.52\ kJ$ at $8$ atm equilibrium pressure. The following equilibrium is present in the container$2O_{3}(g)\rightleftharpoons 3O_{2}(g)$. The partial pressure of $O_{3}$ will be : $(ln\ 10 = 2.3, R = 8.3\ Jmol^{-1} K^{-1})$.


Question:
Which one the following has largest number of isomers?
(R = alkyl group, en = ethylenediamine)


Question: The non-electrostatic force that produces motional electromotive force is ___ , and the non-electrostatic force that induces electromotive force is ___.

Electromagnetic Field and Microwave Technology


Question: Which of the following algal life cycles exhibits a heteromorphic alternation of generations dominated by the sporophyte phase?


Question: A point moves along a straight line $x$, with its acceleration changing according to the following rule: $a = ct - k^{2}x$, where $x$ is the coordinate of the point, and $c$ and $k$ are constants. When $t=0$, $x=\dot{x}=0$. Determine the law of motion of the point.


Question: $C$ is on a semicircle with diameter $AB$ and center $O.$ Circle radius $r_1$ is tangent to $OA,OC,$ and arc $AC,$ and circle radius $r_2$ is tangent to $OB,OC,$ and arc $BC$ . It is known that $\tan AOC=\frac{24}{7}$ . The ratio $\frac{r_2} {r_1}$ can be expressed $\frac{m} {n},$ where $m,n$ are relatively prime positive integers. Find $m+n.$


Question: $K_{sp} (AgCl) = 2 \times 10^{-10}, \, K_{sp} (AgCNS) = 2.5 \times 10^{-11}$. When water is saturated with both solids, then :

F) Solubility of $AgCl $ is $1.5 \times 10^{-5}$

Choices:
Solubility of $AgCl $ is $1.7 \times 10^{-5}$
Solubility of $AgCNS$ is $1.67 \times 10^{-5}M$
Solubility of $AgCl $ is $1.3 \times 10^{-5}$
Solubility of $AgCl $ is $1.6 \times 10^{-5}$
Solubility of $AgCl $ is $1.5 \times 10^{-5}$
Solubility of $AgCl$ is $1.42 \times 10^{-5}$
Silver ion conc. = $15 \times 10^{-6} M$
Solubility of $AgCl$ is $1.4 \times 10^{-5}$
Solubility of $AgCl$ is $1.45 \times 10^{-5}$


Question: What are the expected teaching outcomes and standards in physical education teaching that are to be achieved by the teacher and students within a certain time frame and scope?

J) Physical Education Teaching Objectives

Choices:
Physical Education Instruction Standards


Question: A non-conducting sphere has a total charge Q uniformly distributed throughout its volume. the centre of the sphere is at origin and its radius is R. let $ U_1 $be the electrostatic potential energy in the region inside the sphere and $ U_2 $ be the electrostatic potential energy in another imaginary spherical shell, having inner radius R and outer radius infinity, centred at origin. select the correct alternative(s)

D) $$ U_1 = \dfrac {Q^2}{8 \pi\varepsilon_0 R} $$

Choices:
$$ U_2 = \dfrac {Q^2}{8 \pi\varepsilon_0 R} $$
$$ U_1 = \dfrac {Q^2}{8 \pi\varepsilon_0 R} $$
$$ U_1 + U_2 = \dfrac {3}{5} \times \dfrac {Q^2}{4 \pi\varepsilon_0 R} $$
$$U_1 = \dfrac {Q^2}{12 \pi \varepsilon_0 R}$$
$$U_1 = \dfrac {Q^2}{6 \pi\varepsilon_0 R}$$
$$U_1 = \dfrac {Q^2}{10 \pi\varepsilon_0 R}$$


Question: What is the purpose of using pre-coding on the input sequence in some responsive technologies?

Choices:
Attenuation of the trailing amplitude in accelerated impulse response

Information and Communication Engineering


Question: A 12-year-old girl is brought to your psychiatry office by her parents, who are concerned that she has not made any friends since starting middle school last year. The girl tells you that she gets nervous around other children, as she cannot tell what they are feeling, when they are joking, or what she has in common with them. Her teachers describe her as "easily distracted" and "easily upset by change." When asked about her hobbies and interests, she states that "marine biology" is her only interest and gives you a 15-minute unsolicited explanation of how to identify different penguin species. Mental status exam is notable for intense eye contact, flat affect, and concrete thought process. Which of the following is true regarding this child's disorder?

A) Boys are more commonly affected than girls

Choices:
Boys are more commonly affected than girls
Girls are more commonly affected than boys
Typical age of onset is 3-5 years of age
Impaired attention is a key feature of the disorder
It is usually associated with a family history of schizophrenia
Intellectual disability is a key feature of the disorder


Question: In ultra-low oxygen storage, the concentration of oxygen is below_____.


Question: Three particles each of mass m are located at vertices of an equilateral triangle ABC. They starts moving with equal speed v each along the medians of the triangle and collide at its centroid G. If, after collision, A comes to rest and B retraces its path along GB, then C


Question: We now define an algorithm: The definition of a(n) is the n-th prime number p such that q - p = 36, where q is the next prime after p. Given the input x_list (a series of values): [25, 26, 27, 28, 29, 30, 31, 32, 33, 34], determine the corresponding output sequence y_list.


Question:
Let $f : N \to N$ be a function such that
$$$f(n) = \sum_{\substack{abc=n, a,b,c\in N}}ab + bc + ca$$$
For example, $f(5) = (1 \cdot 1 + 1 \cdot 5 + 5 \cdot 1) + (1\cdot 5 + 5 \cdot 1 + 1 \cdot 1) + (5 \cdot 1 + 1 \cdot 1 + 1 \cdot 5) = 33$ , where we are summing over the triples $(a, b,c) = (1,1, 5)$ , $(1,5,1)$ , and $(5,1,1)$ . Find the last three digits of $f(303)$ .


Question: Determine (a) the specific speed of a pump that is to deliver 2,000gpmagainst a head of 150 ft with arotativespeed of 600 rpm.(b) If therotativespeed were doubled, what would bethe flow rate and the head developed by the pump? Assume no change in efficiency. (c) The specific speed for theconditions given in (b). And (d) find the required operatingspeed of a two-stage pump to satisfy the requirementsin (a).

Power Engineering and Engineering Thermophysics


Question: Which of the following is not a fundamental aspect fo Disaster management?


Question:
The following descriptions of representatives and their works in Russian socialist realist literature are correct:
I. Fedin's (Константин Федин) trilogy Early Joys (Первые радости), No Ordinary Summer (Необыкновенное лето), and The Bonfire (Костер) represents the pinnacle of his creative achievements.
II. The novel The City in the Steppe (Город в степи) is Serafimovich's (Александр Серафимович) most important and representative work created before the October Revolution, which garnered widespread attention at the time.
III. Serafimovich's most significant socialist masterpiece is The Iron Flood (Железный поток), which deals with the theme of the Civil War. Its protagonist is Guo Ruhe.
IV. Gorky's (Максим Горький) real name is Alexei Maximovich Peshkov (Алексей Максимович Пешков). He is considered "the most outstanding representative of proletarian art" and the founder of Russian socialist realist literature.
V. In The Song of the Falcon (Песня о Соколе), the author uses fairy tales and personification to create two opposing artistic images: the falcon and the snake.
VI. Gorky's first published work is Makar Chudra (Макар Чудра), which, through the themes of freedom and love, praises people's virtues of cherishing freedom, inspiring them to resist enslavement and oppression and to strive for the courage to be free.


Question: What is the typical protein content in normal urine when a urine protein qualitative test is negative?


Question: The common reflection point gather records, subtracting the normal time difference from the propagation time of each reflected wave, this is called ().


Question: Find the area of the figure enclosed between the curves $y = 4 \cdot x^2$, $y = \frac{ x^2 }{ 3 }$, and $y = 2$.


Question: If SR = 100 torr and PR = 350 torr, then which of the following cannot be a mole fraction of A in vapour phase and a mole fraction of A in liquid phase respectively?

Mass Transport and Separation Process in Chemical Engineering


Question: When the transaction is based on the seller's samples, the seller usually backs up some samples as a basis for quality assessment in order to prevent any objections to quality in the future. These samples are called ( ).


Question: Which of the following structures are associated with Bell's palsy?


Question: For a strontium salt solution labeled with Sr$^{89}$, the specific radioactivity is 2 mCi/ml. If 0.2 ml of the solution is used to prepare a sample and the counting efficiency is 0.1, how many times must the original solution be diluted to achieve a radioactivity of 1000 counts per minute in a beta counting tube?


Question: Per capita allowance of water per day is recommended at:


Question: Human capital content becomes a measure of the quality level of human resources ().


Question: When installing a pressure gauge on a pipeline to measure the pressure of high-temperature (above 60°C) fluid media, to prevent direct contact between the hot medium and the elastic element, a ( ) should be installed before the pressure instrument to avoid the impact of temperature changes on measurement accuracy and the elastic element.

B) u-shaped or coiled tube type condenser

Choices:
v-shaped or straight tube type condenser
u-shaped or straight tube type condenser
looped tube or straight tube type condenser
corrugated tube or looped tube type condenser
corrugated tube or coiled tube type condenser
corrugated tube or straight tube type condenser


Question: Which method is commonly used for imaging blood flow in the brain?


Question: Currently, the main types of vapor deposition films are aluminum plating and ______.


Question: Watson believes that the initial caress, scratching, and patting of the child's skin will cause the child to smile, smile, and produce pleasant expressions and behaviors. What are these innate emotions?


Question: Find the refracting angle of a glass prism (n = 1.52) for which the minimum deviation is 15°.


Question: A rectangular conductor frame with a width of $a$ and a length of $b$ is placed in a magnetic field, where the magnetic flux density is $B = B_0 \sin \omega t \, e_y$. When the conductor frame is stationary, its normal direction $e_n$ forms an angle of $\alpha$ with $e_y$. What is the induced electromotive force when the conductor frame is stationary or rotating around the $x$-axis at an angular velocity of $o$ (assuming that at time $t = 0$, $\alpha = 0$)?

H) $$
- a b B_{0} \omega\operatorname{c o s} 2 \omega t
$$

Choices:
$$
a b \omega B_{0}\operatorname{c o s} \omega t
$$
$$
a b B_{0} \operatorname{c o s} \omega t
$$
$$
a b B_{0}\operatorname{c o s} \alpha
$$
$$
- a b B_{0} \omega\operatorname{c o s} 2 \omega t
$$
$$
- a b \alpha B_{0}\operatorname{c o s} \omega t
$$
$$
- b B_{0} \omega\operatorname{c o s} \omega t
$$


Question:
Consider the following system of differential equations:
$$
\ddot{y} \,+\, 3 \dot{y} \,+\, 2 \, y \,=\, 0, \qquad y ( 0 ) \,=\, 0.1, \qquad \dot{y} ( 0 ) \,=\, 0.05
$$
What is the response $y \left( t \right)$ of the system under the given initial conditions?

D) $$
\mathbf{y}=[ \mathbf{1} \qquad0 ] \left[ \begin{matrix} {{{\mathbf{x}_{1}}}} \\ {{{\mathbf{x}_{2}}}} \\ \end{matrix} \right]
$$

Choices:
$$
\mathbf{y}=[ \mathbf{2} \qquad-1 ] \left[ \begin{matrix} {{{\mathbf{x}_{1}}}} \\ {{{\mathbf{x}_{2}}}} \\ \end{matrix} \right]
$$
$$
\mathbf{y}=[ \mathbf{1} \qquad0 ] \left[ \begin{matrix} {{{\mathbf{0}}}} \\ {{{\mathbf{x}_{2}}}} \\ \end{matrix} \right]
$$
$$
\mathbf{y}=[ \mathbf{1} \qquad1 ] \left[ \begin{matrix} {{{\mathbf{x}_{1}}}} \\ {{{\mathbf{x}_{2}}}} \\ \end{matrix} \right]
$$
$$
\mathbf{y}=[ \mathbf{1} \qquad0 ] \left[ \begin{matrix} {{{\mathbf{x}_{1}}}} \\ {{{\mathbf{x}_{2}}}} \\ \end{matrix} \right]
$$
$$
\mathbf{y}=[ \mathbf{0} \qquad1 ] \left[ \begin{matrix} {{{\mathbf{x}_{1}}}} \\ {{{\mathbf{x}_{2}}}} \\ \end{matrix} \right]
$$
$$
\mathbf{y}=[ \mathbf{1} \qquad2 ] \left[ \begin{matrix} {{{\mathbf{x}_{2}}}} \\ {{{\mathbf{x}_{1}}}} \\ \end{matrix} \right]
$$
$$
\mathbf{y}=[ \mathbf{-1} \qquad0 ] \left[ \begin{matrix} {{{\mathbf{x}_{1}}}} \\ {{{\mathbf{x}_{2}}}} \\ \end{matrix} \right]
$$
$$
\mathbf{y}=[ \mathbf{0} \qquad1 ] \left[ \begin{matrix} {{{\mathbf{x}_{2}}}} \\ {{{\mathbf{x}_{1}}}} \\ \end{matrix} \right]
$$
$$
\mathbf{y}=[ \mathbf{1} \qquad0 ] \left[ \begin{matrix} {{{\mathbf{x}_{1}}}} \\ {{{\mathbf{0}}}} \\ \end{matrix} \right]
$$
$$
\mathbf{y}=[ \mathbf{1} \qquad0 ] \left[ \begin{matrix} {{{\mathbf{x}_{2}}}} \\ {{{\mathbf{x}_{1}}}} \\ \end{matrix} \right]
$$


Question: What is the buffer capacity of seawater?

D) The number of equivalents of an acid or base that need to be added to change a buffer solution by one pH unit.

Choices:
The total volume of acids or bases necessary to shift the buffer by one pH level.
The sum of ions necessary to balance one pH value in seawater.
The range of pH values that seawater can neutralize without alteration.
The number of equivalents of an acid or base that need to be added to change a buffer solution by one pH unit.
The total volume of ions required to offset a pH change by one.
The amount of dissolved oxygen needed to adjust the seawater pH by one unit.
The volume of water required to dilute seawater to neutralize one pH unit.
The total amount of dissolved salts necessary to stabilize the pH level by one unit.
The quantity of salts that must be accumulated to adjust pH by a single unit.
The level of dissolved substances necessary to alter the buffer by one pH point.


Question: A light of wavelength $ \lambda$ is incident on a metal sheet of work function $ \phi$ = 2eV. The wavelength $ \lambda$ varies with time as$ \lambda = 3000 + 40t,  $ where   $\lambda$ is in $\mathring{A}$  and t is in second. The power incident on metal  sheet is constant at $100 W$. This signal is switched on and off for time intervals of $2 mins$ and $1 min$ respectively. Each time the signal is switched on, the $ \lambda$ start from initial value of $3000$. The metal plate is grounded and electron clouding is negligible. The efficiency of photo-emission is $1  \%$.  $(hc = 12400 eV)$The total number of photoelectrons ejected in one hour is


Question: An organic compound, $C_3H_8O$ does not give a precipitate with $2,4$-dinitrophenyl hydrazine reagent and does not react with metallic sodium. It could be:


Question: The most frequently implicated antibiotic among the causes of drug induced liver injury is:


Question: If $\oint _{ s }^{  }{ E.dS } =0$ over a surface, then:

F) All charges must necessarily be outside the surface.

Choices:
The number of flux lines entering the surface is greater than the number of flux lines leaving it.
The electric field inside the surface is constant.
All charges are uniformly distributed on the surface.
The number of flux lines entering the surface must equal to the number of flux lines leaving it.
The number of flux lines entering the surface must necessarily equal the number of flux lines leaving it.
All charges must necessarily be outside the surface.
The electric field inside the surface is necessarily uniform.
The electric field inside the surface is uniform.
The electric field inside the surface and on it is zero.
The electric field inside the surface is zero.


Question: To avoid the first-pass effect of the liver when using a suppository for systemic action, it should be inserted to a distance of ( ) from the anus.


Question: An equilibrium reaction $X+Y \rightleftharpoons W+Z, \triangle H=+ve $ is spontaneous in the forward direction. Then corresponding sign of $\triangle G$ and $\triangle S $ should be respectively:


Question: What is myocarditis characterized by granulomatous lesions?


Question: Which is correct about the division of powers between the NPC and the NPC Standing Committee?

G) The National People's Congress approves the state budget, and the Standing Committee of the National People's Congress approves some adjustment plans for the state budget

Choices:
The National People's Congress decides on military strategies, and the Standing Committee of the National People's Congress manages national defense assignments
The National People's Congress finalizes foreign treaties, and the Standing Committee of the National People's Congress ratifies those foreign treaties
The National People's Congress approves education policies, and the Standing Committee of the National People's Congress approves curriculum changes
The National People's Congress approves regional laws, and the Standing Committee of the National People's Congress approves amendments to these laws
The National People's Congress determines taxation policies, and the Standing Committee of the National People's Congress regulates fiscal
The NPC decides on the establishment of special administrative regions, and the NPC Standing Committee decides on their social system
The National People's Congress approves the state budget, and the Standing Committee of the National People's Congress approves some adjustment plans for the state budget
The National People's Congress handles defense appropriations, and the Standing Committee of the National People's Congress handles local defense maneuvers
The National People's Congress approved the construction of autonomous regions, and the Standing Committee of the National People's Congress approved the construction of autonomous counties
The NPC decides the selection of the Premier of The State Council, and the NPC Standing Committee decides the selection of the vice Premier of The State Council


Question:
When kaolinate clay Al2(Si2O5)(OH)4 is heated to a sufficient high temperature, chemical water is driven off.
Under these circumstances, what is the composition of the remaining product (in weight percent A12O3)?


Question: The survival curve graph uses relative age as the horizontal axis and the corresponding number of survivors as the vertical axis. Which of the following statements about the survival curve is the only correct one?

H) A concave survival curve indicates a high mortality rate among juveniles.

Choices:
The survival curves of animal populations in nature are one of the three types mentioned above.
A convex survival curve indicates that the mortality rate is consistent across all age groups.
A convex survival curve represents a high mortality rate throughout all life stages.
A convex survival curve indicates a high mortality rate among juveniles.
A concave survival curve suggests mortality rates are equal in all age groups.
A linear survival curve indicates that the mortality rate increases with age.
A convex survival curve means mortality rate decreases steadily with age.
A concave survival curve indicates a high mortality rate among juveniles.
A concave survival curve indicates a constant mortality rate among all ages.
A linear survival curve shows no variation in mortality rates across different life stages.


Question: Two waves of light in air have the same wavelength and are initially in phase. They then travel through plastic layers with thickness of $L_{1}=3.5mm$ and $L_{2}=5.0mm$ and indices of refraction $n_{1}=  1.7$ and $n_{2}=1.25$ as shown in the figure. The rays later arrive at a common point. The longest wavelength of light for which constructive interference occurs at the point is


Question: If customers arrive according to a Poisson process at an average rate of 2 per minute, find the probability that a total of 3 customers arrive in the time intervals $[1, 3)$ and $[3, 5)$ is ().


Question: Determine 0.1 mol/L $\mathrm{Cl}^{-}$ using the ferric ammonium alum indicator method. In the presence of $\mathrm{AgCl}$ precipitate, titrate back the excess 0.1 mol/L $\mathrm{AgNO_{3}}$ with a 0.1 mol/L $\mathrm{KSCN}$ standard solution. The final volume of the solution in titration is 70 ml, with $\left[ \mathrm{Fe^{3+}} \right] = 0.015 \mathrm{mol/L}$. When a distinct endpoint is observed, ($[\mathrm{FeSCN^{2+}}] = 6.0 \times 10^{-6} \mathrm{mol/L}$), what is the excess volume of $\mathrm{KSCN}$ standard solution consumed due to the conversion of the precipitate? ($K_{\mathrm{FeSCN}} = 200$)


Question: How many collisions does a single Ar atom make in 1.0 s when the temperature is 25°C and the pressure is 10bar?


Question: What is a "harmonic minor" in tonal theory?

E) a scale that rises on the seventh fret


Question: The operating temperatures of the nitrogen single-stage throttle liquefier are set at 290K and 71.9K. Assume the nitrogen gas is isothermally and reversibly compressed to 10.1MPa, with its low pressure corresponding to the saturated vapor pressure of liquid nitrogen at 71.9K (0.05MPa). If the heat exchanger is ideal and the system is perfectly insulated, determine the liquefaction rate and the degree of thermodynamic perfection of the liquefaction system.

Power Engineering and Engineering Thermophysics


Question: What is the units (i.e., rightmost) digit of \[ \left\lfloor \frac{10^{20000}}{10^{100}+3}\right\rfloor ? \] %Here $\lfloor x \rfloor$ is the greatest integer less than or equal to %$x$.


Question: What is the wheel diameter of the British Rail Class 92 in meters?


Question: A stainless steel ingot with a length of 0.2 m and a diameter of 0.05 m has a thermal diffusivity $\alpha=0.0156 \, \mathrm{m}^2 /\mathrm{h}$ and a thermal conductivity $k=20 \, \mathrm{W}/(\mathrm{m} \, \mathrm{K})$, with an initial temperature of 363 K. This steel ingot is placed in a furnace heated to a temperature of 1473 K. The combined heat transfer coefficient between the surface of the steel ingot and the surrounding environment (including convection and radiation) is $100 \, \mathrm{W}/(\mathrm{m}^2 \, \mathrm{K})$. Calculate the time required for the steel ingot to reach a temperature of 1073 K.

Power Engineering and Engineering Thermophysics


Question:
Many ions and compounds have very similar names, and there is great potential for confusing them. Write the correct chemical formulas to distinguish between:
(a) calcium sulfide and calcium hydrogen sulfide,
(b) hydrobromic acid and bromic acid,
(c) aluminum ni- tride and aluminum nitrite,
(d) iron(ll) oxide and iron(II) oxide,
(e) ammonia and ammonium ion,

Choices:
$$
\mathrm{C a S, C a S N}
$$
$$
\mathrm{H B r}, \mathrm{H B r N}
$$
$$
\mathrm{A I N}, \mathrm{A I ( N H_{2} )_{3}}
$$
$$
\mathrm{F e O}, \mathrm{F e}_{4} \mathrm{O}_{2}
$$
$$
\mathrm{N H_{3}, N H_{4}} O
$$
$$
\mathrm{C a S, C a H S}
$$
$$
\mathrm{H B r}, \mathrm{H B r} O_{3}
$$
$$
\mathrm{A I N}, \mathrm{A I N O_{2}}
$$
$$
\mathrm{F e O}, \mathrm{F e}_{2} \mathrm{O}_{2}
$$
$$
\mathrm{N H_{3}, N H_{4}}^{-}
$$
$$
\mathrm{C a S, C a F S}
$$
$$
\mathrm{H B r}, \mathrm{H B r O_{\mathrm{4}} {}}
$$
$$
\mathrm{A I N}, \mathrm{A l N} O
$$
$$
\mathrm{F e O}, \mathrm{F e}_{0} \mathrm{O}_{3}
$$
$$
\mathrm{N H_{3}, N H_{3}}^{*}
$$
$$
\mathrm{C a S, C a H O S}
$$
$$
\mathrm{H B r}, \mathrm{H B r} O_{3}
$$
$$
\mathrm{A I N}, \mathrm{A I ( N O_{2} )_{5}}
$$
$$
\mathrm{F e O}, \mathrm{F e O}_{3}
$$
$$
\mathrm{N H_{3}, N H_{5}}^{+}
$$
$$
\mathrm{C a S, C a ( H S }_{3} )
$$
$$
\mathrm{H B r}, \mathrm{H B r} O_{2}
$$
$$
\mathrm{A I N}, \mathrm{A I ( N O )_{3}}
$$
$$
\mathrm{F e O}, \mathrm{F e O}_{2}
$$
$$
\mathrm{N H_{3}, N H}
$$


Question: _______ refer to the collective term for various stars and interstellar matter in the universe.


Question: When did BAe and the American aircraft manufacturer McDonnell Douglas sign a memorandum of understanding regarding the McDonnell Douglas AV-8B Harrier II? Example answer: mm-yyyy

Aeronautical and Astronautical Science and Technology


Question: According to Article I of the International Bank for Reconstruction and Development Agreement, the purpose of the World Bank is ()

I) to promote private foreign investment by means of guarantees or participations in private loans and private investments

Choices:
to promote private foreign investment by means of guarantees or participations in public loans and private investments
to facilitate investment for productive purposes, including to assist in the reconstruction and development of members and to encourage the development of the production and resources of underdeveloped countries
to promote private foreign investment by means of guarantees or indirect funding to public loans and private investments
to provide loan guarantees in conjunction with international loans in other aspects
to promote the long-term balanced development of international trade and maintain the balance of international payments by encouraging international investment to develop the productive resources of members
to promote private foreign investment by means of guarantees or direct funding to private loans and private investments
to promote private foreign investment by means of grants or direct funding to private loans and private investments
to promote private foreign investment by means of guarantees or direct funding to public loans and private investments
to promote private foreign investment by means of guarantees or participations in private loans and private investments
to promote private foreign investment by means of guarantees or indirect funding to private loans and private investments


Question: Benzene andiso-pentane are mixed at 1.5 atm. and 110°F. Determine the compositions of the liquid and vapor using Raoult'slaw.

Mass Transport and Separation Process in Chemical Engineering


Question: Let matrix $A=\left( \begin{matrix} {{{1}}} & {{{2}}} & {{{-1}}} & {{{\lambda}}} \\ {{{2}}} & {{{5}}} & {{{\lambda}}} & {{{-1}}} \\ {{{1}}} & {{{1}}} & {{{-6}}} & {{{1 0}}} \\ \end{matrix} \right)$ , and $R(A)=3$. What is the value of $\lambda$ ?


Question: Which of the following statements about the value of $\alpha_{\mathrm{Y ( H )}}$ is correct ( ).

G) The $\alpha_{\mathrm{Y ( H )}}$ value increases with the rising acidity of the solution.

Choices:
The $\alpha_{\mathrm{Y ( H )}}$ value is unaffected by temperature variations in the solution.
The $\alpha_{\mathrm{Y ( H )}}$ value is inversely related to the dilution of the solvent.
The $\alpha_{\mathrm{Y ( H )}}$ value is constant across all pH levels in the solution.
The $\alpha_{\mathrm{Y ( H )}}$ value decreases with the decreasing pressure of the gas.
The $\alpha_{\mathrm{Y ( H )}}$ value remains constant regardless of the solution's acidity.
The $\alpha_{\mathrm{Y ( H )}}$ value decreases with the rising salinity of the mixture.
The $\alpha_{\mathrm{Y ( H )}}$ value increases with the rising acidity of the solution.
The $\alpha_{\mathrm{Y ( H )}}$ value is independent of any chemical reaction in progress.
The $\alpha_{\mathrm{Y ( H )}}$ value is solely dependent on the molecular weight of solute.
The $\alpha_{\mathrm{Y ( H )}}$ value decreases with the decreasing acidity of the solvent.


Question: The potential energy $U$ for a force field $\overrightarrow { F } $ is such that $U=-kxy$ where $K$ is a constant. Then

J) the force $\overrightarrow { F } $ is a conservative force

Choices:
the force $\overrightarrow { F } = -kx\hat { i } + ky\hat { j }$ is a non-conservative force
the force $\overrightarrow { F } $ is a non-conservative force
the force $\overrightarrow { F } = -kx\hat { i } - ky\hat { j }$ is a non-conservative force
the force $\overrightarrow { F } = kx\hat { i } - ky\hat { j }$ is a conservative force
the force $V$ is a non-conservative force
$$\overrightarrow { F } =kx\hat { i } +ky\hat { j } $$
$$\overrightarrow { F } =ky\hat { i } +kx\hat { j } $$
the force $\overrightarrow { F } = -ky\hat { i } - kx\hat { j }$ is a conservative force
the force $\overrightarrow { F } = kx\hat { i } + ky\hat { j }$ is a non-conservative force
the force $\overrightarrow { F } $ is a conservative force


Question: In agriculture, what is usually the crop with high water use efficiency?

Agricultural Environment and Soil-Water Engineering


Question: The primary purpose of implementing the teacher qualification system is ___.

E) to ensure teacher quality, meeting various teaching needs

Choices:
to standardize the curriculum across different schools
to assess the ability and level of qualified teachers
to certify teachers for international teaching standards
Ensure the Professionalization of the Teaching Profession
to ensure teacher quality, meeting various teaching needs
to enhance the salaries of qualified educators significantly
to provide teachers with ongoing educational opportunities
to encourage lifelong learning among experienced educators
to restrict non-teacher education professionals from entering the teaching profession
to improve student outcomes by changing administrative policies


Question: During the actual process of mixing polymers with solvents, the change in the volume of the system is ( ).


Question: Which of the following measures might have a positive impact on maintaining the healthy development of wildlife populations?


Question: Two immiscible liquids P and Q of different densities are contained in a wide U-tube. The heights of the two liquids above the horizontal line xx' which cuts the boundary between the liquids are $H_P$  and $H_Q$ respectively. The U-tube is transported to a planet where the acceleration of free fall is 2/3 that on the earth, where the liquids do not evaporate and where the heights of liquid (measured relative to xx') are $h_P$ and $h_Q$ respectively. Which of the given statements is correct?

B) Both liquid levels rise up so that $h_P/H_P = h_Q/H_Q$

Choices:
Both iquid levels rise up so that $h_P - H_Q = H_P - H_Q$
Both liquid levels rise up so that $h_P/H_P = h_Q/H_Q$
Both liquid levels rise up so that $h_P + H_Q = H_P + h_Q$
Both liquid levels fall such that $h_P + H_Q = H_P + h_Q$
Both liquid levels fall such that \( h_P - H_Q = H_P - h_Q \)
Both liquid levels fall such that \( h_P - H_P = H_Q - h_P \)
Both liquid levels fall such that \( h_P - H_P = H_Q - h_Q \)
Both liquid levels rise up so that $h_P + H_Q = H_P + H_Q$
The liquid P falls and liquid Q rises such that $\dfrac{h_P}{h_Q} = \dfrac{2}{3} \frac{H_P}{H_Q}$
The liquid levels are unchanged, i.e. , $h_p = H_P$ and $h_Q = H_Q$


Question: The subsurface of a certain construction site is planned to be reinforced using Cement Fly-Ash Gravel (CFG) piles. It is known that the foundation depth is 2.0m, the length of the CFG piles is 14.0m, the pile diameter is 500mm, and the pile body strength is $f_{\mathrm{c u}}=20 \mathrm{MPa}$. The reduction coefficient for the bearing capacity of the soil between piles is set at 0.8. According to the "Technical Code for Ground Treatment of Buildings" (JGJ 79-2002), if the characteristic value of the composite foundation bearing capacity is required to reach 180kPa, which option should be selected for the replacement rate $m$ of the CFG pile area?


Question: Which model can be used to describe the vertical distribution of nutrients in seawater?


Question: Xiaohong knows that after eating 5 out of 9 peanuts, there are still 4 left, but she cannot calculate "9-5=?" This indicates that Xiaohong's thinking has ().


Question: An originally uncharged conductor small sphere makes contact with a large conductor sphere that carries a charge amount of $Q$. After each separation, the small sphere gains a charge amount of $q$. Now, the small sphere is repeatedly brought into contact with the large sphere, and after each separation, the large sphere is replenished with charge to restore its original charge amount. What is the maximum amount of charge the small sphere can acquire?


Question: Known even hard bottom neritic acoustic field is the number of wave vertical component for Jane \ [k_ = {zinc} \ frac {(n - 0.5) \ PI} {H} \] deep sea \ (H = 90 \ \ text {m} \), Sound speed \(c = 1500 \, \text{m/s} \), find the cutoff frequency of normal wave generation.


Question: After completing a project, renovation company A sold the remaining floorboards and other items to property management company B. However, the approved business scope on A's business license does not include the sale of floorboards. How is the legal nature of the transaction between A and B?

Choices:
It is a civil legal act subject to regulatory approval
It is a civil legal act with limited validity
It is a civil legal act with conditional validity
It is a civil legal act subject to judicial review
It is a civil legal act subject to administrative review
It is a civil legal act of uncertain validity


Question: What medicine has the effect of clearing the lungs and resolving phlegm, clearing the periorbital cavity and stopping vomiting?


Question: The correct statement about the super-resolved stimulated emission loss microscopy (STED) technique is ____.


Question: Which type of cell is most suitable for studying lysosomes?

F) Autophagic cells with phagocytic function

Choices:
Autophagic cells with phagocytic function


Question: Calculate the tidal acceleration on a 2-m-tall human falling feet-first into a 1-solar-mass black hole.

F) $$
\mathrm{t w o ~ b i l l i o n ~ g^{\prime} s}
$$

Choices:
$$
\mathrm{t h r e e ~ b i l l i o n ~ g^{\prime} s}
$$
$$
\mathrm{f i v e ~ t h o u s a n d ~ g^{\prime} s}
$$
$$
\mathrm{t e n ~ b i l l i o n ~ g^{\prime} s}
$$
$$
\mathrm{s e v e n ~ h u n d r e d ~ g^{\prime} s}
$$
$$
\mathrm{f o u r ~ m i l l i o n ~ g^{\prime} s}
$$
$$
\mathrm{t w o ~ b i l l i o n ~ g^{\prime} s}
$$
$$
\mathrm{o n e ~ m i l l i o n ~ n / kg^{\prime} s}
$$
$$
\mathrm{o n e ~ t r i l l i o n ~ g^{\prime} s}
$$
$$
\mathrm{s i x ~ m i l l i o n ~ g^{\prime} s}
$$
$$
\mathrm{f i v e ~ b i l l i o n ~ m / s^{\prime} s}
$$


Question: A certain meal when irradiated by light $(v=3.2\times 10^{16}Hz)$ emits photoelectrons with twice K.E. as did photoelectrons when the same metal is irradiated by light $(v= 2.1\times10^{16}Hz)$. The $v_0$ of the metal is:


Question: What is the term for analyzing human remains to detect signs of foul play?


Question: At 298 K, the standard enthalpies of combustion for cyclopropane (g), graphite, and hydrogen gas are -2092, -393.7, and -285.8 kJ·mol$^{-1}$, respectively. The standard molar enthalpy of formation for propene (g) is $20.50 kJ\cdot\mathrm{mol}^{-1}$. What is the $\Delta H_{m}^{\Theta}$ for the isomerization of cyclopropane (g) into propene (g) at 298 K?

H) $$
- 3 3. 1 \mathrm{k J} \cdot\mathrm{m o l}^{-1}
$$

Choices:
$$
- 3 4. 0 \mathrm{k J} \cdot\mathrm{m o l}^{-1}
$$
$$
- 3 3. 5 \mathrm{k J} \cdot\mathrm{m o l}^{-1}
$$
$$
- 3 2. 7 \mathrm{k J} \cdot\mathrm{m o l}^{-1}
$$
$$
- 3 4. 2 \mathrm{k J} \cdot\mathrm{m o l}^{-1}
$$
$$
- 3 2. 0 \mathrm{k J} \cdot\mathrm{m o l}^{-1}
$$
$$
- 3 2. 9 \mathrm{k J} \cdot\mathrm{m o l}^{-1}
$$
$$
- 3 5. 1 \mathrm{k J} \cdot\mathrm{m o l}^{-1}
$$
$$
- 3 3. 1 \mathrm{k J} \cdot\mathrm{m o l}^{-1}
$$
$$
- 3 1. 6 \mathrm{k J} \cdot\mathrm{m o l}^{-1}
$$
$$
- 3 3. 8 \mathrm{k J} \cdot\mathrm{m o l}^{-1}
$$


Question: Which of the following statements about the open-loop frequency response curve of a Type Zero system on the complex plane is correct?

C) It starts at a point on the real axis and ends at another point on the real axis.

Choices:
It starts at a point on the imaginary axis and ends at another point on the real axis.
It emerges from a point in the upper half-plane and ends in the lower half-plane.
It starts at a point on the real axis and ends at another point on the real axis.
It originates from a point on the negative imaginary axis and finishes on the positive imaginary axis.
It initiates from a location in the right half-plane and finishes in the left half-plane.
It commences at a point on the imaginary axis and concludes on the imaginary axis.
It begins at a point on the imaginary axis and terminates on the real axis.
It begins at a point in the lower half-plane and terminates on the upper half-plane.
It departs from a point on the negative real axis and completes on the positive real axis.
It originates from a point in the left half-plane and concludes in the right half-plane.


Question: In the four minor keys with flats as key signatures, which accidental should be used for the leading tone?


Question: During which year of the International São Paulo Biennial in Brazil was Kara Walker the United States representative?


Question: In which year was Dina Nath Walli (an Indian watercolor artist and poet from Srinagar city) born?


Question: Move the charged metal plate A closer to a neutral metal plate B, which has the same length and width as A, aligning the two plates to face each other. Assume the charge on plate A is $q_{A}$, the area of each plate is $S$, and the distance between them is $d \, (\ll \sqrt{S})$. Neglecting edge effects, what is the potential difference between the two plates? What would the result be if plate B is grounded?

A) $$
\frac{q_{A} d} {2 \varepsilon_{0} S};\ \frac{q_{A} d} {\epsilon_{\circ} S}
$$

Choices:
$$
\frac{q_{A} d} {2 \varepsilon_{0} S};\ \frac{q_{A} d} {\epsilon_{\circ} S}
$$
$$
\frac{d S} {q_{A} \varepsilon_{0}};\ \frac{d S} {q_{A} \epsilon_{\circ}}
$$
$$
\frac{q_{A} S} {2 \varepsilon_{0} d};\ \frac{q_{A} S} {\epsilon_{\circ} d}
$$
$$
\frac{q_{A} \varepsilon_{0}} {2 S d};\ \frac{q_{A} \varepsilon_{0}} {S d}
$$
$$
\frac{\varepsilon_{0} q_{A}} {2 d S};\ \frac{\varepsilon_{0} q_{A}} {d S}
$$
$$
\frac{S d} {2 q_{A} \varepsilon_{0}};\ \frac{S d} {q_{A} \epsilon_{\circ}}
$$
$$
\frac{d q_{A}} {2 \epsilon_{\circ} S};\ \frac{d q_{A}} {\epsilon_{\circ} S}
$$
$$
\frac{\epsilon_{\circ} d} {2 q_{A} S};\ \frac{\epsilon_{\circ} d} {q_{A} S}
$$
$$
\frac{2 q_{A} d} {\varepsilon_{0} S};\ \frac{2 q_{A} d} {\epsilon_{\circ} S}
$$


Question: The common sets of functional, metabolic, and morphological abnormal changes found in different diseases are referred to as ( ).


Question: Givenf(t) = ^+\infty\int_-\infty h(\sigma)\textphi(t - \sigma)d\sigma determine the power spectral density of f(t) in terms of the power spectral density of \textphi(t) and the Fourier transform of h(t).

H) G_f(\omega) = ertH(\omega)ert^2 G_\textphi(\omega)

Choices:
G_f(\omega) = ertH(\omega)ert G_\textphi(t)
\( G_f(\omega) = |H(\omega)|^2 / G_{\textphi}(\omega) \)
G_f(\omega) = ertH(\omega)ert^2 / G_\textphi(\omega)
\( G_f(\omega) = \frac{1}{|H(\omega)|^2} G_{\textphi}(\omega) \)
\( G_f(\omega) = \frac{G_{\textphi}(\omega)}{|H(\omega)|^2} \)
\( G_f(\omega) = |H(\omega)| G_{\textphi}(\omega)^2 \)
\( G_f(\omega) = \frac{G_{\textphi}(\omega)}{H(\omega)} \)
G_f(\omega) = ertH(\omega)ert^2 G_\textphi(\omega)
\( G_f(\omega) = H(\omega) G_{\textphi}(\omega)^2 \)
G_f(\omega) = H(\omega)^2 G_\textphi(\omega)


Question: A 26-year-old medical student comes to the physician for a chest x-ray to rule out active pulmonary tuberculosis. He needs a medical and radiological report before starting a medical internship in South Africa. He has no history of serious illness and does not complain of any symptoms. He has smoked 1 pack of cigarettes daily for the past 6 years. He does not drink alcohol. He is 190 cm (6 ft 3 in) tall and weighs 75 kg (165 lbs); BMI is 20.8 kg/m2. His temperature is 37°C (98.6°F), pulse is 80/min, respirations are 18/min, and blood pressure is 128/89 mm Hg. The lungs are clear to auscultation. Cardiac examination shows no abnormalities. The x-ray of the chest shows a small pneumothorax (rim of < 2 cm) between the upper left lung margin and the chest wall. Which of the following is the most appropriate next step in management of this patient?

Choices:
CT of the chest with follow-up x-ray in 24 hours
Observation and follow-up x-ray in 24 hours
Immediate intubation and assisted ventilation
Observation and follow-up x-ray in 48 hours


Question: The target of empirical ethical thinking is____.

A) Moral hypocrisy and spiritual slavery


Question: In a four-stroke cycle engine, how many strokes does it take to complete a cycle?

Choices:
one and a quarter revolutions of the crankshaft
one and a half revolutions of the crankshaft

Power Engineering and Engineering Thermophysics


Question: What type of connection exists between the pectoral girdle and the neurocranium in mammals?


Question: The earliest historical period in which human society developed laws is ()?


Question:
Which of the following descriptions about the abundance characteristics of elements in the Earth's crust is the most accurate? Consider the following statements:
I. The sum of the three most abundant elements in the Earth's crust accounts for 82.58%, and the sum of the nine most abundant elements accounts for 98.13%; compared to the solar system, the Earth's crust is significantly depleted in gas elements such as H, He, Ne, and N, and enriched in Al, K, and Na; the abundance of elements in the Earth's crust is a fixed and unchanging system.
II. The abundance of elements in the Earth's crust varies significantly, with the most abundant element (O) being $10^{17}$ times more abundant than the least abundant element (Rn); the distribution pattern of element abundance in the Earth's crust is similar to that of the solar system and Earth, but there are significant differences in the composition and order of the top 10 elements; the content of Fe and Mg in the Earth's crust is significantly lower than in the entire Earth, while Al, K, and Na are relatively enriched.
III. The sum of the three most abundant elements in the Earth's crust accounts for 82.58%, and the sum of the nine most abundant elements accounts for 98.13%; the distribution pattern of element abundance in the Earth's crust is the same as that of the solar system and Earth, with the composition and order of the top 10 elements being consistent; the Earth's crust is significantly depleted in gas elements such as H, He, Ne, and N, and enriched in Fe and Mg.
IV. The abundance of elements in the Earth's crust does not vary much, with the most abundant element (O) being $10^{10}$ times more abundant than the least abundant element (Rn); compared to the solar system or the universe, the Earth's crust and Earth are significantly depleted in gas elements such as H, He, Ne, and N; compared to the entire Earth, the Earth's crust is significantly depleted in Fe and Mg, and enriched in Al, K, and Na; the abundance of elements in the Earth's crust is a constantly changing open system.
Select the combination that most accurately reflects the abundance characteristics of elements in the Earth's crust.


Question: There are two types of soil, A and B, with different moisture contents. When they come into contact, water in the soil will flow from A to B. Their water potential (Pa) is _____.


Question: A functional protein localized to the rough endoplasmic reticulum (rER) needs to be processed in the Golgi apparatus. Which of the following correctly describes the pathway of this protein from translation and synthesis to localization?

B) Attached ribosomes - rough endoplasmic reticulum - Golgi apparatus - smooth endoplasmic reticulum

Choices:
Attached ribosomes - smooth endoplasmic reticulum - rough endoplasmic reticulum - Golgi apparatus
Attached ribosomes - rough endoplasmic reticulum - Golgi apparatus - smooth endoplasmic reticulum
Free ribosome - rough endoplasmic reticulum - Golgi apparatus - smooth endoplasmic reticulum
Ribosome-attached Golgi apparatus - smooth endoplasmic reticulum - rough endoplasmic reticulum - ribosomes
Free ribosomes - rough endoplasmic reticulum - Golgi apparatus - smooth endoplasmic reticulum
Attached ribosomes - smooth endoplasmic reticulum - Golgi apparatus - rough endoplasmic reticulum
Free ribosomes - smooth endoplasmic reticulum - Golgi apparatus - rough endoplasmic reticulum
Free ribosome - Golgi apparatus - rough endoplasmic reticulum - smooth endoplasmic reticulum
Ribosome-attached Golgi apparatus-rough endoplasmic reticulum-smooth endoplasmic reticulum
Free ribosomes - Golgi apparatus - smooth endoplasmic reticulum - rough endoplasmic reticulum


Question: Which article of the International Covenant on Civil and Political Rights stipulates that everyone shall have the right to hold opinions without interference?


Question: Which writer was concerned with the reaction of workers to key characteristics of bureaucracies?


Question: The mean arterial pressure refers to the average value of arterial blood pressure at every moment during one cardiac cycle. So, what should its value be closer to?

Choices:
Arterial pressure at ventricular systole
The systolic and diastolic pressure product
A midpoint of blood pressure fluctuations
Systolic pressure and diastolic pressure sum
The difference between systolic pressure and diastolic pressure


Question: What is the premiere date of the Korean drama 'Come! Jang Bo-ri'?


Question: Magnetic moment (spin only) of an octahedron complex having CFSE $= - 0.8 \Delta _ { 0 }$ and surrounded by weak field ligands can be:


Question: Reinforcing bars set at the transverse joints of cement concrete pavements serve as what?


Question: What is the conversion factor for the strength of a standard concrete cube tested using a specimen of 100㎜×100㎜×100㎜?


Question: A piece of wire is bent in the shape of a parabola $y = kx^2$ (y-axis vertical) with a bead of mass m on it. The bead can slide on the wire without friction. It stays at the lowest point of the parabola when the wire is at rest. The wire is now accelerated parallel to the x-axis with a constant acceleration a. The distance of the equilibrium position of the bead, where the bead can stay at rest with respect to the wire, from the y-axis is


Question:
According to the two notes, it can be determined that they belong to:
L:1/4
M:4/4
K:C
[^Ag]4 |] %1


Question: Which geological structure is the longest mountain range in the world?


Question: The maximum tensile stress that aluminum can withstand is $2.0 \times 10^{8} \, \mathrm{N / m}^{2}$, and for steel, it is $1.0 \times 10^{9} \, \mathrm{N / m^{2}}$. Assuming the radius of the aluminum membrane is $0.01 \, \mathrm{m}$, what is the maximum fundamental frequency it can achieve? For a steel membrane with the same radius, what is the highest fundamental frequency it can reach? (Note that for membranes, the maximum frequency is independent of thickness.) (Assume the perimeter is fixed.)


Question: Which of the following rivers lies in a rift valley?


Question: Which of the following is the main staff used for the bassoon?


Question: Two parallel plate air capacitors each of capacitance $C$ were connected in series to a battery with e.m.f. $E$. Then one of the capacitors was filled up with a uniform dielectric with relative permittivity $k$. What amount of charge flows through the battery?


Question: In which month and year was the 64-bit version of Raspberry Pi OS released?


Question: A 38-year-old female patient developed symptoms of food poisoning after drinking milk. The remaining milk was cultured and a Gram-positive small bacillus was isolated. The bacterium is non-motile at 37°C, CAMP test positive, catalase positive, and salt and alkali resistant. Based on this, which bacterium is most likely?


Question:
Given a two-stage amplifier circuit with the voltage gain for each stage respectively as:
$$
\dot{A}_{\mathrm{u1}}=\frac{\dot{U}_{\mathrm{o1}}}{U_{\mathrm{i}}}=\frac{-25 \mathrm{j} f}{\left( 1+\mathrm{j} \ \frac{f}{4} \right) \left( 1+\mathrm{j} \frac{f}{10^{5}} \right)}, \ \dot{A}_{\mathrm{u 2}}=\frac{\dot{U}_{\mathrm{o}}}{U_{\mathrm{i 2}}}=\frac{-2 \mathrm{j} f}{\left( 1+\mathrm{j} \ \frac{f}{50} \right) \left( 1+\mathrm{j} \frac{f}{10^{5}} \right)}
$$
Determine the approximate lower cutoff frequency $f_{\mathrm{L}}$ and upper cutoff frequency $f_{\mathrm{H}}$ for the circuit. ( )


Question: Given the following 5 statements, which of them are correct: 1. Nylon 6 has better moisture absorption than Nylon 66. 2. Nylon 6 has better thermal stability than Nylon 66. 3. Nylon 66 has a higher melting point than Nylon 6. 4. Aromatic polyamides have higher modulus than aliphatic polyamides. 5. The production of pulp and paper easily causes environmental pollution.

Textile Chemistry and Dyeing Engineering


Question:
Which land-assembly approach (or approaches) has (have) the following characteristics?
I. Serviced land is used as compensation for the losses of affected residents caused by the redevelopment project.
II. Existing residents have the option to remain in the neighborhood after redevelopment.
III. Local infrastructure will be built on land space made available by land surrendered to the implementing agency by participating residents.

Land Resource Management and Administrative Management


Question: In which year was Zoleka Mandela first diagnosed with cancer?


Question: We now define an algorithm: The definition of a(n) is the least nontrivial exponent e such that the decimal representation of n is a substring of the decimal representation of n raised to the power of e. Given the input x_list (a series of values): [78, 79, 80, 81, 82, 83, 84, 85, 86, 87], determine the corresponding output sequence y_list.


Question:
If the interaction energy of a crystal can be expressed as
$$
u(r) = -\frac{\alpha}{r^m} + \frac{\beta}{r^n}
$$
Given $m = 2, n = 10, r_0 = 3 \, \text{Å}, \, W = 4 \, \text{eV}$, determine the values of $\alpha$ and $\beta$.

A) $$
\alpha=
4 5 \, \mathrm{e V} \cdot\AA,
$$
$$
\beta=5. 9 0 \times1 0^{-1 6} \mathrm{\, e V} \cdot\AA
$$

Choices:
$$
\alpha=
4 5 \, \mathrm{e V} \cdot\AA,
$$
$$
\beta=5. 9 0 \times1 0^{-1 6} \mathrm{\, e V} \cdot\AA
$$
$$
\alpha=
6 4 \, \mathrm{e V} \cdot\AA,
$$
$$
\beta=1. 8 5 \times1 0^{-1 7} \mathrm{\, e V} \cdot\AA
$$
$$
\alpha=
5 5 \, \mathrm{e V} \cdot\AA,
$$
$$
\beta=8. 1 8 \times1 0^{-1 7} \mathrm{\, e V} \cdot\AA
$$
$$
\alpha=
9 0 \, \mathrm{e V} \cdot\AA,
$$
$$
\beta=3. 2 4 \times1 0^{-1 5} \mathrm{\, e V} \cdot\AA
$$
$$
\alpha=
3 2 \, \mathrm{e V} \cdot\AA,
$$
$$
\beta=6. 0 2 \times1 0^{-1 7} \mathrm{\, e V} \cdot\AA
$$
$$
\alpha=
1 0 \, \mathrm{e V} \cdot\AA,
$$
$$
\beta=9. 5 2 \times1 0^{-1 5} \mathrm{\, e V} \cdot\AA
$$
$$
\alpha=
2 8 \, \mathrm{e V} \cdot\AA,
$$
$$
\beta=4. 9 3 \times1 0^{-1 6} \mathrm{\, e V} \cdot\AA
$$
$$
\alpha=
1 3 \, \mathrm{e V} \cdot\AA,
$$
$$
\beta=7. 4 5 \times1 0^{-1 6} \mathrm{\, e V} \cdot\AA
$$
$$
\alpha=
7 7 \, \mathrm{e V} \cdot\AA,
$$
$$
\beta=8. 7 6 \times1 0^{-1 6} \mathrm{\, e V} \cdot\AA
$$
$$
\alpha=
8 9 \, \mathrm{e V} \cdot\AA,
$$
$$
\beta=2. 3 0 \times1 0^{-1 5} \mathrm{\, e V} \cdot\AA
$$


Question: Which aspect is the same between pulmonary circulation and systemic circulation?


Question: What is the Book of Kells?

F) from the late 8th or early 9th century.


Question: Many rocks formed by contact metamorphism have no or little foliation. Why is this?

E) There is almost no deformation during contact metamorphism.

Choices:
Contact metamorphism occurs without significant pressure.
During the metamorphic process, no intact minerals were reconstituted.
Contact metamorphism occurs under high temperature conditions.
The heat during contact metamorphism preserves the rocks.
There is almost no deformation during contact metamorphism.
The minerals are reorganized with minimal deformation.
Mineral structures are unaffected during contact metamorphism.
The rock textures are retired with barely any disruption.
Contact metamorphism occurs under low temperature conditions.
Rock textures are preserved during contact metamorphism.

Mineralogy, Petrology, and Economic Geology


Question: What is the water replenishment and pressure maintenance method that integrates safe and reliable operation, water hammer prevention, water replenishment, pressure maintenance, and expansion water regulation?

G) Expansion pressure tank pressure maintenance

Choices:
Intermittent water replenishment pressure maintenance with a water pump
Wind turbine-assisted water pressure regulation
Gravity-fed reservoir pressure maintenance system
Steam-powered reciprocating pump maintenance
Continuous water replenishment pressure maintenance with a water pump
Solar-powered water pressure stabilization
Expansion pressure tank pressure maintenance
Variable frequency drive pressure maintenance
High-level water tank pressure maintenance
Thermoelectric cooling water pressure system


Question: The equilibrium constant for the reaction $\mathrm{I_{2} ( g ) \to2}$ l(g) is 0.26 at 1000 K. What is the corresponding value of $K_{\mathrm{c}}?$ ?


Question: Between 1980 and 1985, which province did Ren Zhongyi serve as the First Secretary of the Provincial Party Committee?


Question: In the range of $1000 \sim 1500 \, \mathrm{K}$, the liquid Cu-Zn alloy exhibits the properties of an ideal solution, with $\alpha = -19250 \, \mathrm{J/mol}$ and $\lg p_{\mathrm{Zn}}^{*} = -\frac{6850}{T} - 0.75 \lg T + 8.36$. Try to determine the following: the vapor pressure of zinc over the Cu-Zn alloy surface at $1200 \, \mathrm{K}$ with $x_{\mathrm{Cu}} = 0.4$; the standard enthalpy change of formation $\Delta H_{\mathrm{m}}^{\ominus}$ for the Cu-Zn alloy at $1200 \, \mathrm{K}$.

Physical Chemistry of Metallurgical Process


Question: The auscultation site for ventricular septal defect murmur is ( ).

B) Left margin of the sternum between the third and fourth ribs.

Choices:
Third intercostal space at the midclavicular line.
Left margin of the sternum between the third and fourth ribs.
Left sternal border between the fourth and fifth ribs.
The second intercostal space at the right sternal border
Right margin of the sternum above the third rib.
Second intercostal space at the left edge of the sternum
Below the left clavicle adjacent to the sternum.
Right sternal border between the second and third ribs.


Question: Given that the boiler emits 10 m³ of flue gas for each 1 kg of coal burned (under standard conditions), and the coal consumption rate of the boiler is 30 t/h, the gas analyzer measures the volume fractions of the components in the flue gas as $φ_CO₂ = 0.12, φ_O₂ = 0.05, φ_N₂ = 0.79, φ_H₂O = 0.04$. The temperature of the flue gas in the chimney is $280^{\circ} \ \mathrm{C}$, and the pressure is 0.98 × 10⁵ Pa. Determine the volumetric flow rate of the flue gas in the chimney

Power Engineering and Engineering Thermophysics


Question: In the arrangement shown the two blocks attached to the two ends of a string passing over a pulley, resting on an incline plane $\left (\theta = \dfrac {\pi}{4}\right )$. The plane is moved with an acceleration $g/2$ towards left $(m_{2} > m_{1})$.


Question: At a height of $15\ m$ from ground velocity of a projectile $\displaystyle ec{v}= \left ( 10\hat{i}+10\hat{j} \right )$ and  ($g = 10\ ms^{-2}$ )

H) maximum height of projectile form ground is $20\ m$

Choices:
horizontal range of projectile is $100\ m$
maximum height of projectile form ground is $17.5\ m$
maximum height of projectile form ground is $22\ m$
maximum height of projectile form ground is $19.5\ m$
particle was projected at an angle of $\displaystyle 45^{\circ}$ with horizontal
maximum height of projectile form ground is $15\ m$
maximum height of projectile form ground is $20\ m$
maximum height of projectile form ground is $25\ m$
maximum height of projectile form ground is $21\ m$


Question: The radius of the piston sound source on an infinite baffle is 10 cm, and the equivalent mass of its mechanical system is 1000 g. It is known that its resonance frequency when operating in water is 2000 Hz. What is the equivalent elastic modulus of this system? What change occurs to the resonance frequency of this piston source when it operates in air?

E) 5.17 × 10 $^{8}$ N/m; the resonant frequency has increased.

Choices:
3.33 × 10 $^{8}$ N/m; the resonant frequency decreased.
9.88 × 10 $^{8}$ N/m; the resonant frequency remained constant.
5.17 × 10 $^{7}$ N/m; the resonant frequency remained constant.
6.12 × 10 $^{8}$ N/m; the resonant frequency decreased.
5.17 × 10 $^{8}$ N/m; the resonant frequency has increased.
1.23 × 10 $^{8}$ N/m; the resonant frequency decreased.
2.99 × 10 $^{9}$ N/m; the resonant frequency decreased.
7.05 × 10 $^{8}$ N/m; the resonant frequency decreased.
4.22 × 10 $^{9}$ N/m; the resonant frequency remained constant.
8.44 × 10 $^{8}$ N/m; the resonant frequency remained constant.


Question: What are the main types of environmental protection laws in China?

H) Environmental protection standalone laws; Environmental protection cross-sectional laws; Environmental protection comprehensive laws

Choices:
Environmental protection individual statutes; Environmental protection group statutes; Environmental protection total statutes
Environmental conservation single acts; Environmental conservation combined acts; Environmental conservation entire
Environmental conservation local acts; Environmental conservation regional acts; Environmental conservation global acts
Environment conservation specific laws; Environment conservation inclusive laws; Environment conservation overlapping
Environmental protection regional laws; Environmental protection sectorial laws; Environmental protection unified laws
Environmental protection municipal laws; Environmental protection provincial laws; Environmental protection national laws
Environmental control solo regulations; Environmental control intersecting regulations; Environmental control complete regulations
Environmental protection standalone laws; Environmental protection cross-sectional laws; Environmental protection comprehensive laws
Environmental guard local decrees; Environmental guard province decrees; Environmental guard federal decrees
Environmental safeguard regional policies; Environmental safeguard sectorial policies; Environmental safeguard unified policies


Question: A three-phase input single-phase output AC-AC frequency conversion device, the input voltage is 380 V (line voltage), the main circuit structure is two sets of three-phase bridge full control circuit inverse parallel, what are the output frequency and the output voltage adjustment range ?


Question: Which of the following works is a representative piece from the Renaissance period?


Question: The material and end constraints of a rod with a circular cross-section and high flexibility remain unchanged. If both its geometric dimensions (length and cross-sectional diameter) are doubled, what multiple of the critical pressure is it compared to the original column?


Question: What are the two types of Italian oratorios?

D) Latin Oratorios and Secular Oratorios

Choices:
Liturgical Cantatas and Secular Chorales
Liturgical Oratorios and Roman Oratorios
Baroque Cantatas and Religious Serenatas
Vernacular Oratorios and Choral Cantatas

Music History, Education, and Technology


Question: The vibrational mode density $$g ( \omega) $$ of a one-dimensional monoatomic chain =________.


Question: What theory is built around the principle that 'people make choices regarding how to behave based on values and beliefs'?


Question: The mirror surface of the condenser mirror of the searchlight is a surface of rotation, whose shape is formed by a curve $L$ on the $x O y$ coordinate surface rotated about the $x$ axis. According to the performance requirements of the condenser mirror, all the light emitted at a point $O$ on its axis of rotation ($x$ axis) is parallel to the axis of rotation after it is reflected. The equation for the curve $L$ is ().


Question: Two gear wheels of the same thickness (as shown), but one with twice the diameter of the other, are mounted on parallel light axles far enough so that the teeth of the wheels do not mesh. The larger wheel is spun with angular velocity $\Omega$  and the wheels are then moved together so that they mesh. For the meshed rotating gears, if $\displaystyle \frac{Kinetic\  energy\, lost}{Original\, Kinetic\, energy} = \frac{1}{3+X}$, find the value of $X$.


Question: Consider a population of garden peas in which the genes F for full pods and f for constricted pods are segregating. Assuming that gene frequencies for this population are found to be: p (frequency of F) = 0.7 and q (frequency of f) = 0.3, and that the population is in genetic equilibrium, what proportion of the progeny produced frommatingsof full-podded× full-poddedwill be constricted-podded?


Question: The correct statements about the Yokoyama Rule are:

D) Managers should motivate organizational members to work spontaneously.

Choices:
The most effective control relies on institutional constraints.
Revolutions depend on self-awareness; managers do not need to make painstaking efforts.
Managers should motivate organizational members to work spontaneously.


Question: Mitochondrial bases 16184 to 16188 are 5 consecutive Cs. If a C is inserted, it should be named ( ).


Question: To get maximum current in resistance of $3\Omega$, one can use $n$ parallel rows of $m$ cells each connected in series. If the total no. of cells is $24$ and the internal resistance is $0.5$ ohm then:


Question: What type of connection is present between the jaw arch and the braincase in mammals?


Question: For long-distance oil and gas pipelines, what is the most important maintenance task?

Oil and Gas Field Development and Storage & Transportation Engineering


Question: Which of the following tissues is often present in growing organs?


Question: An inductor $20\ mH$, a capacitor $50\ \mu F$ and a resistor $40\ \Omega$ are connected in series across a source of emf $V=10\sin 340t$. The power loss in A.C. circuit is:


Question: Anhydrous calcium chloride is often used as a dessicant. In the presence of excess of $CaCl_2$, the amount of the water taken up is governed by $K_p = 6.4 \times 10^{85}$ for the following reaction at room temperature, $CaCl_2 (s) + 6H_2O (g)\rightleftharpoons CaCl_2 \cdot 6H_2O (s)$. What is the equilibrium vapour pressure of water in a closed vessel that contains $CaCl_2 (s)$?


Question: What is the critical radius of the hotspot for RDX at ignition temperatures of \(300^\circ \text{C}\) and \(500^\circ \text{C}\). Given the parameters for RDX: \(\rho = 1.8 \, \text{g/cm}^3\), \(c = 2.1 \, \text{J/g·K}\), \(Q = 2093 \, \text{J/g}\), \(Z = 10^{18.5} \, \text{s}^{-1}\), \(E = 198.87 \, \text{kJ/mol}\), and \(\lambda = 29.3 \times 10^{-4} \, \text{J/K·cm·s}\).


Question:
Consider the network described by the following equation:
$$
G(s) = \frac{s + \frac{1}{T_{1}}}{s + \frac{1}{T_{2}}}
$$
What is the steady-state output of this network?

Choices:
$$
y_{\mathrm{s s}}( t ) \, = \, {\frac{X T_{1} T_{2} } {T_{1} \, + \, T_{2}}} \, \mathrm{s i n} (\omega t \, + \, \operatorname{a r c t a n} T_{1} \omega - \operatorname{a r c t a n} T_{2} \omega)
$$


Question: Which of the following when  added to $1.0L$ of$0.5M$ HBr would result in maximum increase in pH:-$\left[ {PKa\left( {C{H_3}COOH} \right) = 4.74} \right]$


Question: Which is the correct statement about the maxillary first premolar?

F) It is the largest of the premolars, with two cusps on the symphysis, and most of the E-roots are divided into buccolingual roots at the mid-root or apical 1/3 of the root.

Choices:
It is the largest of the incisors, with two cusps on the symphysis, and most of the E-roots are divided into buccal roots at the mid-root or apical 1/4 of the root.
It is the smallest of the premolars, with one cusp on the symphysis, and most of the E-roots are fused into mesiodistal roots at the mid-root or cervical 1/3 of the root.
It is the largest of the premolars, with one cusp on the symphysis, and most of the E-roots are divided into mesial roots at the mid-root or apical 1/2 of the root.
It is the second largest of the premolars, with three cusps on the symphysis, and most of the E-roots are joined into lingual roots at the mid-root or apical 1/2 of the root.
It is the largest of the molars, with two cusps on the symphysis, and most of the E-roots are united into buccolingual roots at the mid-root or cervical 1/3 of the root.
It is the largest of the premolars, with two cusps on the symphysis, and most of the E-roots are divided into buccolingual roots at the mid-root or apical 1/3 of the root.
It is the largest of the premolars, with two cusps on the lingual surface, and most of the E-roots are fused into buccolingual roots at the mid-root or apical 1/3 of the root.
It is the largest of the premolars, with three cusps on the symphysis, and most of the E-roots are divided into buccolingual roots at the mid-root or apical 1/2 of the root.
It is the largest of the premolars, with two cusps on the symphysis, and most of the E-roots are divided into mesiodistal roots at the mid-root or cervical 1/3 of the root.
It is the largest of the premolars, with two cusps on the labial surface, and most of the E-roots are divided into lingual roots at the mid-root or apical 1/3 of the root.


Question: Y,K,n represent the Young's modulus, bulk modulus and rigidity modulus of a body respectively. If rigidity modulus is twice the bulk modulus, then


Question: Which of the following is the most likely cause of a buzzing sound when a beginner snare drum student plays fast?

B) The student is hammering the drumstick onto the drum.

Choices:
The student is playing multiple strokes on the drum.
The student is hammering the drumstick onto the drum.
The student is dropping the drumstick onto the drum.
The student is playing single strokes on the drum.


Question: We now define an algorithm: The definition of a(n) is: Sums of distinct powers of 5, which are the numbers that can be represented as the sum of unique terms from the sequence 5^0, 5^1, 5^2, and so on. Given the input x_list (a series of values): [40, 41, 42, 43, 44, 45, 46, 47, 48, 49], determine the corresponding output sequence y_list.


Question: A ball of mass $m$ falls vertically from a height $h$ and collides with a block of equal mass $m$ moving horizontally with a velocity $v$ on a surface. The coefficient of kinetic friction between the block and the surface is ${ \mu  }_{ k }=0.2$, while the coefficient of resittution ($e$) between the ball and the block is $0.5$. There is no friction acting between the ball and the block. The velocity of the block just after the collision decreases by


Question: In which year did the uprising of the sailors of the Baltic Sea 'Gangut' battleship occur in Russia?


Question: Given that the degree of polymerization of the polyethylene sample is $5 \times 10^{4}$, with a $\mathrm{C-C}$ bond length of 0.154 nm and a bond angle of $109.5^{\circ}$, calculate the mean square end-to-end distance of the polyethylene sample when considered as a freely rotating chain is ().


Question: In which year did Rudolf Diesel publish the paper 'Theory and Construction of a Rational Heat Engine to Replace the Steam Engine and Combustion Engines Known Today'?

Power Engineering and Engineering Thermophysics


Question: In oil and gas pipelines, what might be the reasons for a continuous increase in internal diameter?

Oil and Gas Field Development and Storage & Transportation Engineering


Question: Who is Mo Jiren from the Neapolitan opera school during the Baroque period?

Music History, Education, and Technology


Question: The gas pressure at the base of the photosphere is approximately $2 \times1 0^{4} \; \mathrm{N} \; /\mathrm{m}^{-2}$ and the mass density is $3. 2 \times1 0^{-4}$ kg /$\mathrm{m}^{-3}$ . Estimate the sound speed at the base of the photosphere is ().


Question: Since what year has the Bader Award for Organic Chemistry been awarded?


Question: Highways and primary roads should generally ensure _________.

Traffic Information Engineering and Control


Question: A $500 \mathrm{kV}$ gas-insulated cable features a phase-separated, enclosed coaxial cylindrical electrode structure, with the outer diameter of the conductive core measuring $89 \mathrm{mm}$ and the inner diameter of the shell being 248mm. The gas pressure at 20°C is 0.4MPa. What is the breakdown voltage of this slightly non-uniform electric field gas gap? How much margin does it have compared to the 500kV system's impulse insulation level requirement of 1550kV?


Question: The outcomes of ________ include: recovery; prolonged unresolved or progression to chronic; spreading and disseminating.


Question: Determine the potential for the cell.$Pt\mid ^{Fe^{2+}}_{Fe_{3+}}\mid Cr_{2}O_{7}^{-2}\mid Cr^{+3},H^{+},Pt \mid$in which [$ Fe^{+2} $] and [$ Fe^{+3} $] are 0.5M and 0.75 M respectively and $ [Cr_{2}O_{7}^{-2}] ,[$ Cr^{+3} $] and $ H^[+}   are 2 M, 4 M  and 1 M respectively.Given:   $ Fe^{+2} + e \rightarrow Fe^{+3}$              $ E^{\circ} = 0.770 V $ and               $414H^{+}+6e+[Cr_{2}O_{7}^{-2}] \rightarrow 2Cr^{+3} + 7H_{2}O $               $ E^{\circ} = 1.35 V $


Question:
The sequence $\{y_{n} \}$ satisfies the recurrence relation
$$
y_{n}=10 \, y_{n-1}-1 \quad( \, n=1, 2, \cdots\, ).
$$
If $y_{0}=\sqrt{2} \approx 1.41$ (to three significant figures), how large is the error when calculating up to $y_{10}$? Set $\delta=0.5 \times 10^{-2}$


Question:
An ideal diatomic gas undergoes a process in which internal energy relates to its volume as $ U= k\sqrt V$, where k is a positive constant. Based on the given information, answer the following question.
The molar heat capacity of gas for this process is :


Question: Which of the following condition is associated with the presence of Kerley B lines on chest X ray?

Choices:
Pulmonary capillary wedge pressure elevation
Pulmonary capillary wedge pressure reduction
Pulmonary capillary wedge pressure normalization


Question: In the basic theory of blitzkrieg, cutting off which side's connection with the enemy's front-line forces can weaken the enemy's morale and combat effectiveness?


Question:
Let the domain of discourse $R = \{ 1, 2, 3, 4, 5 \}, \; A, B \in \mathcal{F}(R)$, and
$A = \left( 0.2, 0.3, 0.6, 0.1, 0.9 \right), \; B = \left( 0.1, 0.2, 0.7, 0.2, 0 \right)$.
What is the Euclidean nearness degree?


Question: The lift on a spinning circular cylinder in a freestream with a velocity of 30 m/s and at standard sea level conditions is 6 N/m of span. Calculate the circulation around the cylinder.


Question:
A 60-year-old woman presents to the Emergency Department with right-sided pleuritic chest pain and mild shortness of breath for two days. The patient denies any coughing, fevers, syncope, chest trauma, recent travel or sick contacts, recent surgeries or hospitalizations, known history of cancer, hormone use, or prior history of deep vein thrombosis (DVT) or pulmonary embolism (PE). Her medical history includes hypertension and diabetes. On examination, her temperature is 37ᵒC, blood pressure 140/90 mmHg, pulse 108 beats/min, respiratory rate 20 breaths/min, and oxygen saturation is 97% on room air. A portable chest X-ray shows no acute findings. An EKG shows sinus tachycardia with no ischemic abnormalities. The patient remains tachycardic despite IV fluids and relocating the patient to a calm environment.
Which of the following is the best course of action to further evaluate for a diagnosis of pulmonary embolism?


Question: $9.0 g$ ice at $0^{\circ}\! C$ is mixed with $36 g$ of water at $50^{\circ}\! C$ in a thermally insulated container. Using the following data, answer the question that follow ?$C_P(H_2O)=4.18 \:Jg^{-1}K^{-1}; \:\Delta H_{fusion}(ice) =335\:J\:g^{-1}$ $\Delta S_{ice}$ is :


Question: In a fiber optic communication system, the signal's state of polarization changes due to the polarization mode dispersion (PMD) of the fiber. If the maximum phase delay induced by PMD is 0.2 radians, find the change in the signal's state of polarization in the worst-case scenario (in radians).


Question: When estimating the unknown parameter θ, given an unbiased estimator x of θ and a sufficient statistic T, if y represents the conditional mean of x given T, which of the following statements are correct?

Choices:
the variance of y is greater than the variance of x
the variance of y is less than the variance of x


Question: A machine learning problem involves four attributes plus a class. The attributes have 3, 2, 2, and 2 possible values each. The class has 3 possible values. How many maximum possible different examples are there?


Question:
As shown in figure a horizontal platform with a mass $m$ placed on it is executing SHM along y-axis. If the amplitude of oscillation is $2.5cm$, the minimum period of the motion for the mass not to be detached from the platform is
($g=10m/{sec}^{2}={\pi}^{2}$)


Question: What has directed and supported the reform of the education system?


Question: At 25°C, the diffusion-controlled rate of a certain electrode reaction is $3 \times 10^{-2} \text{ mol/m}^2 \text{s}$. If the diffusion rate is increased 1000 times through vigorous stirring, the diffusion step can become a non-controlling step. How much should the diffusion activation energy be changed for this purpose?

G) The diffusion activation energy should be reduced to 17106 J/mol.

Choices:
The diffusion activation energy should be stabilized at 29000 J/mol.
The diffusion activation energy should be adjusted to 6000 J/mol.
The diffusion activation energy should remain unchanged at 5000 J/mol.
The diffusion activation energy should be increased to 17106 J/mol.
The diffusion activation energy should be increased to 34000 J/mol.
The diffusion activation energy should decrease to 11000 J/mol.
The diffusion activation energy should be reduced to 17106 J/mol.
The diffusion activation energy should be increased to 12000 J/mol.
The diffusion activation energy should increase to 8000 J/mol.
The diffusion activation energy should be constant at 25000 J/mol.