problem stringlengths 14 4.09k | solution stringlengths 1 802k | task_type stringclasses 3
values | problem_tokens int64 5 895 |
|---|---|---|---|
The following is a multiple choice question (with answers).
===Question
The equilibrium constant for the reaction given below is $2.0 \times 10^{-7}$ at $300$K. Calculate the standard entropy change for the reaction.$(\Delta H^0 = 28.4 kJ mol^{-1})$$PCl_{5(g)} \rightleftharpoons PCl_{3(g)} + Cl_{2(g)}$
===Choices
$$-0... | $$-0.336 J mol^{-1}$$ | general_qa | 233 |
The following is a multiple choice question (with answers).
===Question
Due to the influence of the propagation distance of Dingwen, the distribution pattern of forest plants is mainly
===Choices
Uniform Distribution
Chi-square Distribution
Jump Distribution
Clustered Distribution
Random Distribution
Symmetrical Distr... | Clustered Distribution | general_qa | 69 |
The following is a multiple choice question (with answers).
===Question
Add or subtract as indicated.
$$\frac{3 x+2}{3 x+4}+\frac{3 x+6}{3 x+4}$$
===Choices
\\frac{6x + 4}{3x + 4}
\frac{6x + 16}{3x + 4}
\frac{6x + 11}{3x + 4}
\frac{6x + 18}{3x + 4}
2
\frac{6x + 14}{3x + 4}
\frac{6x + 8}{3x + 4}
\frac{6x + 6}{3x + 4}
\... | 2 | general_qa | 195 |
The following is a multiple choice question (with answers).
===Question
In certain localized regions of some semiconductor devices, there exists an extremely strong electric field, causing the electron temperature $T$ to differ from the lattice temperature $T_{\mathrm{L}}$ (magnetic field effect). Let $\mu_{\mathrm{n}}... | $$
7 7. 3 \mathrm{K}
$$ | general_qa | 359 |
The following is a multiple choice question (with answers).
===Question
For what magazine did artist J.C. Leyendecker win a magazine cover competition in 1896?
===Choices
The Saturday Evening Post
Harper's Magazine
The American Review
The American Magazine
The Century Magazine
The Ladies' Home Journal
The Saturday Rev... | The Century Magazine | general_qa | 75 |
The following is a multiple choice question (with answers).
===Question
A 52-year-old man comes to the physician because of increasing weakness of his arms and legs over the past year. He has also had difficulty speaking for the past 5 months. He underwent a partial gastrectomy for gastric cancer 10 years ago. His temp... | Riluzole | general_qa | 280 |
The following is a multiple choice question (with answers).
===Question
A student constructs a series RLC circuit. While operating the circuit at a frequency f, he uses an AC voltmeter and measures the potential difference across each device as $(\Delta V_R)_{max}$ = 4.8 V. $(\Delta V_C)_{max}$ = 29 V, and $(\Delta V_... | There is not enough information to answer the question | general_qa | 196 |
The following is a multiple choice question (with answers).
===Question
The LANDSAT series of satellites with panchromatic bands is ___, with a spatial resolution of 15m.
===Choices
landsat-3
landsat-2
landsat-10
landsat-7
landsat-8
landsat-5
landsat-6
landsat-1
landsat-4
landsat-9 | landsat-7 | general_qa | 91 |
The following is a multiple choice question (with answers).
===Question
Research on aquifer discharge includes _____, _____ and _____.
===Choices
Discharge process, discharge mechanism, discharge scale
Discharge way, discharge state, discharge capacity
Discharge rate, discharge era, discharge factors
Discharge waterwa... | Discharge route, discharge conditions, discharge amount | general_qa | 133 |
The following is a multiple choice question (with answers).
===Question
The earliest textbook on "Exercise Physiology" in China, authored by ( ), was published in 1924.
===Choices
Dai Yufeng
Zhou Lixian
Wang Yirun
Cai Qiao
Huang Zhenwei
Zhao Minxue
Sun Lijuan
Li Jianxin
Shen Junxian
Cheng Hanchang | Cheng Hanchang | general_qa | 96 |
The following is a multiple choice question (with answers).
===Question
Given a cubic polynomial:
$$
a_{0} s^{3} \,+\, a_{1} s^{2} \,+\, a_{2} s \,+\, a_{3}=0
$$
where all coefficients are positive numbers. What is the application of the Routh-Hurwitz stability criterion to this equation?
===Choices
$$
a_{0} a_{2} = a... | $$
a_{1} a_{2} > a_{0} a_{3}
$$ | general_qa | 297 |
The following is a multiple choice question (with answers).
===Question
The average indicated pressure of a two-stroke diesel engine is approximately from 0.35 to 1.3 MPa, and the stroke number is generally 2. Given the lower heating value of diesel as 41,868 kJ/kg, after substituting into the analysis, which of the fo... | from 0.40 to 0.48 | general_qa | 163 |
The following is a multiple choice question (with answers).
===Question
The electric potential in a certain region of space is given by $V=3x^{2}+2x$, where $x$ is in meter and $V$ is in volt, in this region the equipotential surface are
===Choices
Plane parallel to the YZ plane
Concentric sphere concentrated at y-axi... | Concentric sphere concentrated at origin. | general_qa | 154 |
The following is a multiple choice question (with answers).
===Question
There are registration forms for 10, 15 and 25 candidates from each of the three regions. The registration forms for boy's are 3, 7 and 5 respectively. Take a random entry form for a region. What is the probability that the first one to be drawn is... | $$\frac{2 9} {9 0}
$$ | general_qa | 228 |
The following is a multiple choice question (with answers).
===Question
What is the change in the effective self-weight stress in the soil when the groundwater level drops?
===Choices
No change above the original water level, no change below the original water level
No change above the original water level, increase b... | No change above the original water level, increase below the original water level | general_qa | 186 |
The following is a multiple choice question (with answers).
===Question
When creating roadway excavation and lining cycle charts, consideration must be given to how much contingency time should be allocated.
===Choices
25%
30%
10%
15%
45%
40%
60%
35%
20%
50% | 10% | general_qa | 69 |
The following is a multiple choice question (with answers).
===Question
The length of a solenoid is $l = 300 \text{ mm}$, with a cross-sectional diameter of $d = 15 \text{ mm}$, and it is closely wound with a fine, surface-insulated wire for a total of $N = 2500$ turns. When a current of $I = 2.0 \text{ A}$ flows throu... | $$
1. 7 \times1 0^{2}~\mathrm{J / m^{3}}
$$ | general_qa | 389 |
The following is a multiple choice question (with answers).
===Question
A certain amount of idea mono atomic gas undergoes, process given by $U{V^{\frac{1}{2}}} = C$ where $U$ is the internal energy of the gas. The molar specific heat of the gas for the process will be
===Choices
$$3R$$
$$\frac{5R}{3}$$
$$\frac{{5R}}{... | $$3R$$ | general_qa | 176 |
The following is a multiple choice question (with answers).
===Question
What is the ionization constant, Ka, for a weak monoprotic acid if a 0.060 molar solution has a pH of 2.0?
===Choices
2.5 × 10^-2
1.0 × 10^-2
5.0 × 10^-3
1.5 × 10^-1
4.0 × 10^-3
2.0 × 10^-3
1.5 × 10^-2
2.0 × 10^-1
1.7 × 10^-1
3.0 × 10^-3 | 2.0 × 10^-3 | general_qa | 153 |
The following is a multiple choice question (with answers).
===Question
A state has enacted a statute imposing a tax on the extraction of all platinum in the state. The extraction of other minerals is not taxed by the state. This is true even though there is considerable mining of silver, turquoise, sulfur, and stone w... | The mining company must convince the court that the classification in this statute is not rationally related to the advancement of a legitimate state interest. | general_qa | 363 |
The following is a multiple choice question (with answers).
===Question
Acts considered rights in civilian societies may be ___________________ in a military society.
===Choices
Guidelines
Habits
Expectations
Privileges
Offenses
Norms
Responsibilities
Duties
Traditions
Obligations | Offenses | general_qa | 65 |
The following is a multiple choice question (with answers).
===Question
By what means is the objective reality of the mode of existence of the movement of matter to be expressed?
===Choices
Momentum and impulse.
Particles and interactions.
Quantum and flux.
Force and velocity.
Energy and motion.
Mass and acceleration.... | Time and space. | general_qa | 81 |
The following is a multiple choice question (with answers).
===Question
What is the difference between the position of the light compensation point in sunny plants and shade plants?
===Choices
High
Unchanged
Moderate
Inconsistent
Above average
Low
Variable
Fluctuating
Below average
Equal | High | general_qa | 62 |
The following is a multiple choice question (with answers).
===Question
A liver lesion showing multiseptate cystic areas with egg shell or mural calcifications on CT scan is suggestive of?
===Choices
Hemangioma
HCC
Cystic Hydatid Disease
Cystic Hydatid Tumor
Cystic Hydatid Lesion
Hydatid Cyst
Cystic Hydatid Nodule
Ame... | Hydatid Cyst | general_qa | 112 |
The following is a multiple choice question (with answers).
===Question
The resonant wavelength of a rectangular brass resonator cavity filled with air is known to be $\lambda_{0}=2.5 \text{ cm}$. If the cavity is filled with a polytetrafluoroethylene medium \(\left(\mathbf{e}_{t}=2.1, \text{tan} \delta = 4 \times 10^{... | 1323 | general_qa | 168 |
The following is a multiple choice question (with answers).
===Question
How do the right and left lateral condyles move when the jaw moves to the left?
===Choices
Both condyles rotate clockwise simultaneously
The right condyle rotates, the left condyle slides
Both condyles slide towards the left
The right condyle rota... | The left condyle rotates, the right condyle slides | general_qa | 141 |
The following is a multiple choice question (with answers).
===Question
It is known that paramagnetic materials satisfy Curie's law $M=\frac{C}{T} H$, and the energy density satisfies $U=a T^{4}$ (where $a$ is a constant). What is the magnetization heat of the paramagnetic material when the magnetic field increases fro... | $$
- {\frac{G \mu_{0} H^{2}} {2 T}}
$$ | general_qa | 312 |
The following is a multiple choice question (with answers).
===Question
In Access, the data access page primarily used for displaying, sorting, or grouping data is called ().
===Choices
Data Input Page
Dynamic Data View
Filtered Query Page
Aggregated Chart Page
Window Form Page
Pivot Table Page
Structured Form Page
In... | Interactive Report Page | general_qa | 82 |
The following is a multiple choice question (with answers).
===Question
What is the primary function of the U.S. military's Judge Advocate General (JAG) Corps?
===Choices
To conduct legal assessments and evaluations in military cases
To conduct surveillance and intelligence operations overseas
To coordinate training a... | To provide legal advice and representation in military justice matters | general_qa | 129 |
The following is a multiple choice question (with answers).
===Question
At a pressure of $1.013 \times 10^{5} \mathrm{~Pa (1 atm)}$, homogeneous nucleation occurs in supercooled liquid pure nickel at a degree of supercooling of 319°C. Assume the critical nucleus radius is 1 nm, the melting point of pure nickel is 1726 ... | $$
1. 0 6 \times1 0^{-1 8} ( \mathrm{J} )
$$ | general_qa | 439 |
The following is a multiple choice question (with answers).
===Question
Find $L=\lim_{n \to \infty}\left(x_{n}\right)$, where $x_{n} = \frac{ \sqrt{n^2+1} + \sqrt{n} }{ \sqrt[4]{n^3+n} - \sqrt{n} }$ is the general term of a sequence.
===Choices
0
2
1
-∞
-1
∞ | ∞ | general_qa | 101 |
The following is a multiple choice question (with answers).
===Question
What day/month/year was it announced that the politician Ibrahim Rugova had been diagnosed with lung cancer?
===Choices
5 October 2005
5 July 2005
5 December 2005
5 September 2005
5 February 2005
5 January 2005
5 August 2005
5 June 2005
5 November... | 5 September 2005 | general_qa | 116 |
The following is a multiple choice question (with answers).
===Question
The number of dental caries cases reported during last 10 years are given below 250, 320, 190, 300, 5000, 100, 260, 350, 320 and 160. The epidemiologist wants to find out average number of caries cases reported in that town for last 10 yrs. The mos... | Median | general_qa | 168 |
The following is a multiple choice question (with answers).
===Question
Among the following indicators, the one primarily used to assess the nutritional status of infants and young children is ( ).
===Choices
Height-for-Age Z-score
Maximum Heart Rate
Rohrer index
Bone Mineral Density
Kaup Index
Skinfold Thickness
Bloo... | Kaup Index | general_qa | 83 |
The following is a multiple choice question (with answers).
===Question
A woman owned a 10-acre tract of rural farmland in fee simple absolute. The woman agreed to sell the farmland to a man, and each signed a writing stating that the farmland was beitig sold: ". . . for $10,000, receipt of which is acknowledged. " In ... | No, because the parol evidence rule does not operate to exclude evidence to show lack or want of consideration. | general_qa | 487 |
The following is a multiple choice question (with answers).
===Question
A small system $A$ is in contact with a reservoir $A^{\prime}$ and can exchange both heat and particles withthe reservoir. The number of microstates available to system $A$ does not change. That the difference in total entropy when $A$ is in two di... | $$
\Delta S^{*}=-( N_{1}-N_{2} ) \left( \frac{\partial S} {\partial N} \right)_{U}-( U_{1}-U_{2} ) \left( \frac{\partial S} {\partial U} \right)_{N}
$$ | general_qa | 764 |
The following is a multiple choice question (with answers).
===Question
A combinational PLD with a fixed AND array and a programmable OR array is called a
===Choices
CPLD
RAM
FPGA
ASIC
PLA
PLD
PROM
ROM
EEPROM
PAL | PROM | general_qa | 63 |
The following is a multiple choice question (with answers).
===Question
In a lossless uniform transmission line with $Z_{0} = 500 \Omega$, a load of $Z_{\mathrm{L}} = (300 + \mathrm{j} 400) \Omega$, wavelength $\lambda = 3 \mathrm{m}$, transmission line length $l = 1.25 \lambda$, source $E_{\mathrm{g}} = 50 \mathrm{V}$... | $$0.47(W)$$ | general_qa | 242 |
The following is a multiple choice question (with answers).
===Question
Air with a total flow rate of 20,000 ft³/s (0.072 lbₒ/f₃) passes through two propellers with a diameter of 6.5 feet. These propellers are installed on an aircraft flying at 150 miles per hour through still air. What is the horsepower input for each... | $$
1 9 9 4 h p
$$ | general_qa | 236 |
The following is a multiple choice question (with answers).
===Question
Conduct a kinetics experiment of desulfurization of molten steel in a crucible. The initial sulfur concentrations in the molten steel and slag are $w[\mathrm{S}] = 0.8\%$ and $w(\mathrm{S}) = 0.01\%$, respectively. The crucible diameter is $d = 0.0... | $$
1. \, 3 7 \times1 0^{-4} \mathrm{~ m o l / s},176s
$$ | general_qa | 673 |
The following is a multiple choice question (with answers).
===Question
Crimes against humanity are the murder or extermination of ( ) before or during the war
and other inhumane acts.
===Choices
Refugees
Evacuees
Irregular armed forces
Volunteer Army
Terrorist organizations
Soldiers
Regular armed forces
Peacekeeping ... | Civilians | general_qa | 86 |
The following is a multiple choice question (with answers).
===Question
The two films written by the famous female writer Zhang Ailing in the 1940s are ____.
===Choices
"Lights in Thousands of Houses" and "New Complaints of the Boudoir"
"Long Live Madam" and "Lights in Thousands of Houses"
"New Complaints of the Boudo... | "Love Without End" and "Long Live Madam" | general_qa | 198 |
The following is a multiple choice question (with answers).
===Question
Many herbivores have adapted their digestive systems to their diet and feeding behaviors, leading to the development of a complex stomach. Cattle and sheep have a four-chambered stomach; which part is considered the true stomach?
===Choices
Chambe... | Rumen | general_qa | 94 |
The following is a multiple choice question (with answers).
===Question
The following three functions are provided:
$\mathrm{f}( \mathbf{n} ) \ =2 1\mathbf{n}^{4}+\mathbf{n}^{2}+1 0 0 0, \ \ \mathrm{g} \ \ ( \mathbf{n} ) \ =1 5 \mathbf{n}^{4}+5 0 0 \mathbf{n}^{3}, \ \ \mathrm{h} \ \ ( \mathbf{n} ) \ =5 0 0 \mathbf{n}^{... | (1)right$$ \\ $$
(2)wrong$$ \\ $$
(3)wrong$$ \\ $$
(4)right$$ \\ $$
(5)wrong$$ \\ $$ | general_qa | 621 |
The following is a multiple choice question (with answers).
===Question
What year was the municipality of El Santuario, Antioquia, Colombia, founded?
===Choices
1757
1754
1768
1755
1766
1765
1764
1767
1756
1763 | 1765 | general_qa | 84 |
The following is a multiple choice question (with answers).
===Question
A drug that blocks both alpha and beta receptors is ____.
===Choices
Carvedilol
Nebivolol
Amlodipine
Labetalol
Acebutolol
Propranolol
Bisoprolol
Metoprolol
Clonidine
Atenolol | Labetalol | general_qa | 79 |
The following is a multiple choice question (with answers).
===Question
A person is stuck in Antarctica in a ship wreck. He doesn't have any drinking water available. He finds an ethylene ($CH_2 = CH_2$) cylinder containing 4.2 g of ethylene. He decides to burn this ethylene to melt 1kg of ice at $-10^0C$. When a mole ... | 575 ml | general_qa | 175 |
The following is a multiple choice question (with answers).
===Question
At ordinary temperature,the molecule of an ideal gas have only translation and rotational kinetic energies,At high temperature,they may have vibrational energy.As a result of this, at higher temperature molar specific heat capacity at constant volu... | $$ = \frac {5R}{2} $$ | general_qa | 189 |
The following is a multiple choice question (with answers).
===Question
If Arabic numerals are used for ship's draft marks, the spacing between adjacent numbers should be
===Choices
15 cm
20 cm
6 cm
10 cm | 10 cm | general_qa | 51 |
The following is a multiple choice question (with answers).
===Question
What proppant should be used during hydraulic fracturing in deep wells under high closure stress?
===Choices
Silica pellets
Ceramic microspheres
Ceramsite
Plastic spheres
Carbonate grains
Aluminum pellets
Quartz sand
Marble chips
Resin-coated sand... | Ceramsite | general_qa | 81 |
The following is a multiple choice question (with answers).
===Question
Rock mass structure stress and stress field are important factors affecting its stability. Which of the following statements is correct?
===Choices
Maximum stress in the field consistently aligns with shear forces instead of the tectonic force dir... | In the tectonic stress field, the direction of the maximum principal stress indicates the direction of tensile stress, which is consistent with the direction of tectonic forces. | general_qa | 244 |
The following is a multiple choice question (with answers).
===Question
Which architect led the team that won the 2020 Taiwan Architecture Award with Guanpu Elementary School?
===Choices
Huang Shengyuan and Wang Li and Chen Yuh-Cheng
Huang Shengyuan
Yung Ho Chang
Ieoh Ming Pei
Ma Yansong
Doreen Heng Liu
Liu Jiakun
Zhu... | Huang Shengyuan | general_qa | 108 |
The following is a multiple choice question (with answers).
===Question
In which month of 2005 was the Lal Bahadur Shastri Dam, also known as the Almatti Dam, located on the Krishna River in North Karnataka, India, completed?
===Choices
April
July
May
March
September
June
October
August
January
November | July | general_qa | 78 |
The following is a multiple choice question (with answers).
===Question
Bob Wilson borrowed $20,000 from Ted Lamar to open a hardware store. Ted's only interest in the business was the repayment of his 5-year unsecured loan. Bob was so grateful for the loan that he named his business "Wilson and Lamar Hardware" and pur... | Bob Wilson and Ted Lamar are liable jointly. | general_qa | 322 |
The following is a multiple choice question (with answers).
===Question
Find the velocity $v$ of the rocket at the moment when its mass is equal to $m$, if at the initial moment it possessed the mass $m_0$ and its velocity was equal to zero.
===Choices
$$\displaystyle ec{v}= ec{u}\ln{\frac{m}{m_0}}$$
\displaystyle \ve... | $$\displaystyle ec{v}=- ec{u}\ln{\frac{m_0}{m}}$$ | general_qa | 319 |
The following is a multiple choice question (with answers).
===Question
Assume that all gases are perfect and that data refer to 298 K unless otherwise stated. Estimate the standard reaction Gibbs energy of $\mathrm{N}_2(\mathrm{~g})+3 \mathrm{H}_2(\mathrm{~g}) \rightarrow$ $2 \mathrm{NH}_3(\mathrm{~g})$ at $1000 \math... | +107$\mathrm{kJ} \mathrm{mol}^{-1}$ | general_qa | 290 |
The following is a multiple choice question (with answers).
===Question
What is the common name for the marine organism with the scientific name Fenneropenaeus chinensis?
===Choices
Chinese white shrimp
Chinese spiny lobster
Chinese shrimp
Chinese marine prawn
Chinese river shrimp
Chinese tiger shrimp
Chinese lobster
... | Chinese shrimp | general_qa | 77 |
The following is a multiple choice question (with answers).
===Question
Determine the order of the following functions at the zero point $z=0$. (1) $z^{2} ( e^{z^{2}}-1 )$; (2) 6sin $z^{3} + z^{3} ( z^{6}-6 )$.
===Choices
$$5$$
$$10$$
$$2$$
$$15$$
$$3$$
$$12$$
$$4$$
$$10$$
$$4$$
$$15$$
$$4$$
$$13$$
$$6$$
$$15$$
$$3$$
... | $$4$$
$$15$$ | general_qa | 168 |
The following is a multiple choice question (with answers).
===Question
The introduction of hydroxyl groups into the molecules of organic compounds can be accomplished by sulfonate base fusion reactions, hydroxyl substitution of halogens, (), and oxidative acidolysis of isopropyl aromatic hydrocarbons.
===Choices
hydr... | hydroxyl substitution of amino groups | general_qa | 155 |
The following is a multiple choice question (with answers).
===Question
In order to absorb the aromatics in the coke oven gas, it is planned to use washing oil with an aromatic content of 0.006 (mole fraction, the same below) sprayed from the top of the absorption tower. The washing oil is used at a rate of 31.2 kmol·h... | 0.1086 | general_qa | 281 |
The following is a multiple choice question (with answers).
===Question
There are up to 30 sulfur compounds in garlic, with the one having the strongest biological activity being ().
===Choices
Diallyl sulfide
Diallyl disulfide
Prostaglandin $\mathrm{C}$
Methanethiol complex
Polysulfide compound
Diallyl trisulfide
Dim... | Diallyl disulfide | general_qa | 112 |
The following is a multiple choice question (with answers).
===Question
What is the tectonic scale of study in geotectonics?
===Choices
Vast-scale tectonics
Global-scale tectonics
Wide-scale tectonics
Extensive-scale tectonics
Small-scale tectonics
Minor-scale tectonics
Large-scale tectonics
Medium-scale tectonics
Maj... | Large-scale tectonics | general_qa | 104 |
The following is a multiple choice question (with answers).
===Question
What does Lasso represent?
===Choices
Pop art
Surrealist art
Abstract expressionism
Impressionist movement
Cubist style
Renaissance art
Baroque period
Realism
Modernism
Flemish school | Flemish school | general_qa | 64 |
The following is a multiple choice question (with answers).
===Question
An electron jumps from seconds excited state of hydrogen atom to its ground state and the photon thus emitted is incident on a photo sensitive metal plate of work function 5.1 eV .The stopping potential for the plate would be (approximately)
===Ch... | 3 V | general_qa | 95 |
The following is a multiple choice question (with answers).
===Question
Which of the following does straregy involve?
===Choices
Evaluating outcomes, choosing methods
Responding to crises, adapting tactics
Forecasting trends, measuring results
Handling disputes, maintaining morale
Crafting policies, issuing commands
M... | Assigning forces, establishing goals | general_qa | 94 |
The following is a multiple choice question (with answers).
===Question
$int {{{xcos x} over {{{sin }^3}x}}} dx = left( {} right)$
===Choices
$ - {x over {2{{sin }^2}x}} + {1 over 2}tan x + C$
$ - {x over {2{{sin }^2}x}} - {1 over 2}cot x + C$
- {x over {2{{sin }^2}x}} - {1 over 2}tan x - C
$ - {x over {2{{sin }^2}x}}... | $ - {x over {2{{sin }^2}x}} - {1 over 2}cot x + C$ | general_qa | 307 |
The following is a multiple choice question (with answers).
===Question
Sap flows up a tree at a speed of about $1$ mm $s^{-1}$ through its vascular system (xylem), which consists of cylindrical pores of 20 $\mu m$ radius. Assume the viscosity of sap is the same as the viscosity of water. What pressure difference betwe... | $$
2 0 \mathrm{a t m}
$$
$$
1 0 \mathrm{a t m}
$$ | general_qa | 392 |
The following is a multiple choice question (with answers).
===Question
Find the Taylor series of $f'(x)$ about $a=0$ if $f(x) = \frac{ \sin(x) - x }{ x^2 }$. Use sigma notation in the final answer.
===Choices
∑_{k=1}^∞((-1)^k·(2·k-1)·x^(2·k-2)/(2·k+1)!)
∑_{k=1}^∞((-1)^k·(2·k-1)·x^(2·k-2)/(2·k-1)!)
∑_{k=1}^∞((-1)^k·(2... | ∑_{k=1}^∞((-1)^k·(2·k-1)·x^(2·k-2)/(2·k+1)!) | general_qa | 421 |
The following is a multiple choice question (with answers).
===Question
A certain piglet pen with windows in the Wuhan area adopts a brick-concrete structure and a flat roof. The span is 7.5 meters, the length is 50.4 meters, and the eave height is 4 meters. The four walls (originally the north and south side walls) ar... | 103.6 W/m² | general_qa | 368 |
The following is a multiple choice question (with answers).
===Question
What day, month, and year was Giulio Carlo Argan born?
===Choices
17 May 1917
17 May 1909
17 May 1910
17 May 1915
17 May 1919
17 May 1908
17 May 1911
17 May 1914
17 May 1913
17 May 1912 | 17 May 1909 | general_qa | 121 |
The following is a multiple choice question (with answers).
===Question
When the distance a point radiation source is halved, the radiation level will be
===Choices
Reduced to one-fourth
Reduced to one-fifth
Unchanged
Quadrupled
Tripled
Increased eightfold
Reduced to one quarter
Reduced to half
Decreased to one-third
... | Quadrupled | general_qa | 83 |
The following is a multiple choice question (with answers).
===Question
Saturated liquid ammonia at 500 kPa enters a boiler where it is heated into dry saturated ammonia vapor, then it enters a superheater where it is heated isobarically to 275K. If the mass flow rate of ammonia is $h=2 5. 1 \mathbf{k J} / \mathbf{k g}... | 0.9905kW | general_qa | 283 |
The following is a multiple choice question (with answers).
===Question
The matrix of ductile iron QT600-03 is ().
===Choices
Pearlite+Martens
Ferrite
Pearlite+cementite
Cementite+Austenite
Martensite+Bainite
Pearlite
Ferrite+Pearlite
Ferrite+Bainite
Austenite+Pearlite
Graphite+Ferrite | Ferrite+Pearlite | general_qa | 94 |
The following is a multiple choice question (with answers).
===Question
Which person developed China's international strategy from concept to practice?
===Choices
Chen Yi
Zhao Ziyang
Jiang Qing
Liu Bocheng
Zhou Enlai
Mao Zedong
Jiang Zemin
Lin Biao
Liu He
Deng Xiaoping | Deng Xiaoping | general_qa | 77 |
The following is a multiple choice question (with answers).
===Question
Sulphur trioxide is prepared by the following two reactions.$S_8(s) + 8O_2(g) \rightarrow 8SO_2(g); \Delta H = -2374. kJ $$2SO_2(g) + O_2(g) \rightarrow 2SO_3(g); \Delta H = -198. kJ $Calculate the net change in enthalpy for the formation of one mo... | $396$ kJ | general_qa | 218 |
The following is a multiple choice question (with answers).
===Question
The Fourier series expansion of the function $f(x)=x$ on $-pi<x<pi$ is
===Choices
$$2sum_{n=1}^{infty}(-1)^{n+1}frac{sin nx}{n}$$
$$sum_{n=1}^{infty}(-1)^{n+1}frac{2sin nx}{n}$$
$$2sum_{n=1}^{infty}(-1)^{n+1}frac{sin nx}{2n}$$
$$sum_{n=1}^{i... | $$2sum_{n=1}^{infty}(-1)^{n+1}frac{sin nx}{n}$$ | general_qa | 319 |
The following is a multiple choice question (with answers).
===Question
Which type of cell is most commonly found occupying the tooth root surface after flap surgery?
===Choices
Alveolar bone cells
Periodontal ligament cells
Cementoblasts in periosteum tissue
Connective tissue cells
Dental pulp stem cells
Keratinocyte... | Gingival epithelial cells | general_qa | 107 |
The following is a multiple choice question (with answers).
===Question
In which year did Taiwanese lamp artist Li Guanyi participate in the Taipei City Teacher Folk Art Lantern Making Teaching Research and Training?
===Choices
2021
2017
2016
2020
2024
2025
2022
2023
2018
2019 | 2020 | general_qa | 92 |
The following is a multiple choice question (with answers).
===Question
Given the following cell at $25^{\circ}C$. What will be the potential of the cell ? Given $pK_{a}$ of $CH_{3}COOH\, =\, 4.74$ :$Pt \begin{vmatrix} H_2 \(1 atm) \end{vmatrix}\left.\begin{matrix} CH_3COOH \(10^{-3} M) \end{matrix}\right|\begin{vmatri... | $$- 0.42 V$$ | general_qa | 236 |
The following is a multiple choice question (with answers).
===Question
In urine preservatives, formaldehyde is suitable for _______ detection, toluene is suitable for _______ analysis, and hydrochloric acid is suitable for various hormone tests.
===Choices
enzyme and lipid, mineral levels
bacteria and virus, fatty ac... | cell and cast, chemical composition | general_qa | 130 |
The following is a multiple choice question (with answers).
===Question
A string has a mass per unit length of $10^{-6} kgcm^{-1}$. The equation of simple harmonic wave produced in it is $y=0.2\sin(2x+80t)$. The tension in the string is
===Choices
$$16 N$$
$$0.016 N$$
$$0.00016 N$$
$$0.0016 N$$
$$0.16 N$$
$$1.60 N$$
$... | $$0.16 N$$ | general_qa | 141 |
The following is a multiple choice question (with answers).
===Question
At room temperature (300 K), if a diode is supplied with a forward voltage of 0.7 V, the resulting forward current is 1 $\mathrm{mA}$. When the forward current of the diode increases by a factor of 10, what should the voltage be? Assume the diode s... | $$
\approx0. 7 6 \mathrm{~ V}
$$ | general_qa | 275 |
The following is a multiple choice question (with answers).
===Question
The most distinctive feature of an icebreaker is
===Choices
Having large ballast tanks
Having intermediate ribs
Small draft
Specially reinforced fore peak tank | Having large ballast tanks | general_qa | 46 |
The following is a multiple choice question (with answers).
===Question
Compute the sum of the distinct prime factors of $a^4\left((a-b^3)b+1\right)+1$ if $a=9$ and $b=2$ .
===Choices
65
63
66
61
62
68
64
60
67
69 | 65 | general_qa | 87 |
The following is a multiple choice question (with answers).
===Question
Amenorrhea for 50 days, with early pregnancy symptoms, positive urine pregnancy test, began to have slight vaginal bleeding 2 days ago, this morning the bleeding increased, and abdominal pain intensified, subsequently passed a piece of tissue, afte... | Observation, no special treatment. | general_qa | 177 |
The following is a multiple choice question (with answers).
===Question
There is a relational pattern Teacher(Tno, Tname, Title, Dno,Dname, Cno, Cname, Credit), which satisfies the function dependency set: {Tno→Tname, Tno→Title, Tno→Dno, Dno→Dname, Tno→Cno, Cno→Cname, Cno→Credit}. The following I~IV gives the primary k... | Only IV and VII | general_qa | 304 |
The following is a multiple choice question (with answers).
===Question
Tardy ulnar nerve palsy is seen in:
===Choices
Cubitus varus deformity
Cubitus varus
Ulnar deviation
Cubitus valgus
Genu varus
Cubitus valgus deformity with ulnar deviation
Genu valgus
Cubitus valgus deformity
Cubitus valgus with ulnar deviation
U... | Cubitus valgus | general_qa | 107 |
The following is a multiple choice question (with answers).
===Question
The most cold-resistant of the following warmland turfgrasses is ____.
===Choices
Buffalo grass
Centipede grass
Zoysia japonica
Pennington
Kentucky bluegrass
Bermuda grass
Perennial ryegrass
St. Augustine grass
Red fescue grass
Tall fescue | Zoysia japonica | general_qa | 84 |
The following is a multiple choice question (with answers).
===Question
At $293 K$, the vapor pressure of pure water is 2.33 kPa. The equilibrium vapor pressure of water above a certain aqueous solution is $2.13 \, \mathrm{kPa}$. Given that at 273 K, the entropy of fusion of ice is $\Delta_{\mathrm{s}}^{l} S - 1.22 \, ... | $$
3. 7 8 \times1 0^{-3} \mathrm{~ K}^{-1}
$$ | general_qa | 416 |
The following is a multiple choice question (with answers).
===Question
Simplify the fraction by rationalizing the denominator: $$\frac{4}{\sqrt{108}+2\sqrt{12}+2\sqrt{27}}.$$
===Choices
\frac{1}{4\sqrt{3}}
2\sqrt{12}
\frac{4\sqrt{3}}{108}
2\sqrt{27}
\frac{1}{4\sqrt{27}}
\frac{4\sqrt{3}}{27}
\frac{\sqrt{3}}{12}
\frac{... | \frac{\sqrt{3}}{12} | general_qa | 170 |
The following is a multiple choice question (with answers).
===Question
The end $B$ of the rod $AB$ which makes angle $\theta$ with the floor is being pulled with a constant velocity $v_{0}$ as shown. The length of the rod is $l$
===Choices
At $\theta= 37^{\circ}$ angular velocity of rod is $\displaystyle \frac{5v_{0}... | At $\theta= 37^{\circ}$ angular velocity of rod is $\displaystyle \frac{5v_{0}}{3l}$ | general_qa | 266 |
The following is a multiple choice question (with answers).
===Question
What is the term for the boundary that separates warm, moist air from cooler, drier air?
===Choices
Temperature threshold
Stationary front
Dry divide
Warm front
Heat limit
Moist barrier
Cold front
Humid boundary
Occluded front
Cool barrier | Warm front | general_qa | 71 |
The following is a multiple choice question (with answers).
===Question
What is the role of agar when preparing empty capsules?
===Choices
Stabilizer
Humectant
Plasticizer
Binder
Disintegrant
Lubricant
Thickener
Opacifier
Filler
Permeation enhancer | Thickener | general_qa | 67 |
The following is a multiple choice question (with answers).
===Question
In which year was the magazine 'The Dessert' changed to a monthly publication by Kodansha?
===Choices
2007
2009
2000
2002
2003
2008
2005
2004
2006
2001 | 2002 | general_qa | 87 |
The following is a multiple choice question (with answers).
===Question
An oil reservoir transports petroleum with a kinematic viscosity of $\nu_{\mathrm{p}} = 0.75 \mathrm{cm^2/s}$ through a pipeline with a diameter of $d_{\mathrm{p}} = 250 \mathrm{mm}$ at a flow rate of $q_{\mathrm{V p}} = 140 \mathrm{L/s}$. To deter... | 2.5L/s | general_qa | 241 |
The following is a multiple choice question (with answers).
===Question
"Culture harbors tremendous power, this 'power' differs from the 'force' in physics, the physical 'force' is used by humans to 'transform' the natural world, while the 'power' of culture is used to 'transform' oneself." This statement indicates:
=... | Culture has the function of cultivating and shaping individuals | general_qa | 170 |
The following is a multiple choice question (with answers).
===Question
Male, 21 years old, farmer. Over the past two months, he experienced three episodes of sudden unsteadiness while working, nearly falling. Four days ago, while watching a movie in the village, he suddenly saw two fireballs in front of him. Frightene... | Epileptic psychosis | general_qa | 218 |
The following is a multiple choice question (with answers).
===Question
In the process of promoting the cooperation of handicrafts, the CPC has adopted the ( ) policy.
===Choices
Inclusive Growth
Proactive leadership, steady progress
Mutual assistance and cooperation
Collaborative Innovation
Typical Demonstration
Comm... | Proactive leadership, steady progress | general_qa | 83 |
The following is a multiple choice question (with answers).
===Question
Of the following, which gives the best upper bound for the value of f(N) where f is a solution to the recurrence f(2N + 1) = f(2N) = f(N) + log N for N >= 1, with f(1) = 0?
===Choices
O(N^2 log N)
O(log N) + 0(1)
O(N log(log N))
O(log N)
O(N)
O(N^... | O((log N)^2) | general_qa | 135 |
The following is a multiple choice question (with answers).
===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).
===Choices
G_f(\omega) = ertH(\omega) ert ... | G_f(\omega) = ertH(\omega) ert^2 G_\textphi(\omega) | general_qa | 322 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.