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 geometric curvature and neutron flux density distribution of a cuboid bare assembly with side lengths $a, \, b, \, c$ (including extrapolated distance). Assuming a cuboid bare assembly with side lengths $a = b = c = 0.5 \text{ m}$, $c = 0.6 \te... | $$
1. 0 0 7 \times1 0^{1 8} \,\mathrm{m}^{2} \cdot\mathrm{s}^{-1}
$$ | general_qa | 558 |
The following is a multiple choice question (with answers).
===Question
At 1873K, within the Fe-S system, a sulfur content of $w [ \mathrm{S} ] = 2.11\%$ is in equilibrium with $( p_{\mathrm{H_{2} S}} / p_{\mathrm{H_{2}}} )_{\mathrm{equ}}=4.80 \times 10^{-3}$. When Mn with $w [ \mathrm{Mn} ] = 0.9\%$ is added, the sulf... | $0.026$ | general_qa | 273 |
The following is a multiple choice question (with answers).
===Question
Male patient, 71 years old, with tremor and rigidity of the right limb for 3 years, scored 13 on the Wechsler Parkinson's Rating Scale and is in the stage of ____.
===Choices
initial phase
mild impairment
significant loss
severe decline
critical e... | moderate damage | general_qa | 94 |
The following is a multiple choice question (with answers).
===Question
What is the safe distance from the wall for the 750kV power frequency test transformer and the 1.5MV lightning impulse voltage generator (the safety factor is approximately 1.8 for power frequency and approximately 1.3 for lightning impulse)?
===C... | $$4.5m,~3.51m$$ | general_qa | 201 |
The following is a multiple choice question (with answers).
===Question
Base budget is also called ( ).
===Choices
Zero-base Budgeting
Incremental budgeting
Baseline financial planning
Systematic spending assessment
Progressive financial outlining
Annual budgeting
Parameter budgeting
Quota cash allocation
Cyclic expen... | Incremental budgeting | general_qa | 69 |
The following is a multiple choice question (with answers).
===Question
What is the Clarke value of concentration?
===Choices
The density of an element compared to its abundance in the crust.
The ratio of the average content of a certain element in a geological body to its Clarke value.
The percentage of a mineral fou... | The ratio of the average content of a certain element in a geological body to its Clarke value. | general_qa | 158 |
The following is a multiple choice question (with answers).
===Question
Which modern Chinese literary figure proposed the poetic meter theory of 'dancing with shackles'?
===Choices
Guo Moruo
Wen Yiduo
Mu Dan
Hu Shi | Mu Dan | general_qa | 52 |
The following is a multiple choice question (with answers).
===Question
The following are sufficient conditions for the efficient initiation of bacterial transcription including ____.
===Choices
RNA polymerase secondary sites
RNA polymerase allozyme
RNA polymerase conformational range
RNA polymerase subunit junction
R... | RNA polymerase allozyme | general_qa | 98 |
The following is a multiple choice question (with answers).
===Question
The types of soil texture with more macropores, but fewer capillary pores, and poor fertilizer and water retention properties are
===Choices
Saline soils
Loam
Yellow soil
Black soil
Clay soil
Sandy soil
Podozol
Red soil
Purple soil
Gravel soil | Sandy soil | general_qa | 78 |
The following is a multiple choice question (with answers).
===Question
The P wave originating from the sinoatrial node must be inverted in the _______.
===Choices
AVR lead
V2 lead
Lead I
V5 lead
Lead II
V1 lead
V6 lead
Lead III
V3 lead
V4 lead | AVR lead | general_qa | 71 |
The following is a multiple choice question (with answers).
===Question
Red patches appear on the skin of the nasal bridge, with the lesions raised above the skin surface and extending to both cheeks, seen in ( ).
===Choices
Kala-azar
Fungal Infections of the Skin
Rosacea
Systemic Lupus Erythematosus
Cholesterol Build... | Systemic Lupus Erythematosus | general_qa | 109 |
The following is a multiple choice question (with answers).
===Question
The photoperiodic characteristics of plants are often related to their place of origin. Therefore, when introducing new short-day plant varieties from north to south or from south to north, what varieties are generally selected?
===Choices
Opt for... | Select late-maturing and early-maturing varieties respectively. | general_qa | 156 |
The following is a multiple choice question (with answers).
===Question
Which musical school made a significant contribution to the development of sonata during the Baroque period?
===Choices
Salzburg School
Bologna School
Florentine School
Leipzig School
Vienna School
Dresden School
Neapolitan School
Venetian School
... | Bologna School | general_qa | 78 |
The following is a multiple choice question (with answers).
===Question
For the following reaction $K_{ c }$ = 4 at a certain temperature $2NOCL(G)\ \rightleftharpoons \ 2NO(g)\ +\ { Cl }_{ 2 }(g)$. What concentration of NOCl must be put into a 4 it reaction vessel at the start, in order that the equilibrium concentrat... | 3.75 M | general_qa | 155 |
The following is a multiple choice question (with answers).
===Question
It is desired to produce an aligned and continuous fiber-reinforced epoxy composite having a maximum of 40 vol% fibers. In addition, a minimum longituxdinal modulus of elasticity of 55 GPa $8 \times1 0^{6}$ psi) is required, as is a minimum esie st... | $$
5 4. 3 \ \mathrm{G P a} \ \ ( 7. 8 7 \times1 0^{6} \ \mathrm{p s i} )
$$ | general_qa | 744 |
The following is a multiple choice question (with answers).
===Question
Derivation 2.2 showed how to calculate the work of reversible, isothermal expansion of a perfect gas. Suppose that the expansion is reversible but not isothermal and that the temperature decreases as the expansion proceeds. Find an expression for t... | $$
nR\left((T_i + cV_i)\ln\frac{V_f}{V_i}- c(V_f - V_i)\right)\
$$ | general_qa | 435 |
The following is a multiple choice question (with answers).
===Question
A gaseous mixture enclosed in a vessel of volume V consists of one mole of a gas A with $\gamma$ = $\dfrac { 5 }{ 3 }$ and another gas B with $\gamma$ = $\dfrac { 7 }{ 5 }$ at a certain temperature T. the molar masses of the gases A and B are 4 and... | 2 | general_qa | 201 |
The following is a multiple choice question (with answers).
===Question
What is the most brilliant Gothic work in France?
===Choices
Notre Dame de Paris
Sacré-Cœur Basilica
Church of Sainte-Chapelle
Westminster Abbey
Sanctuary of Our Lady
Saint Sulpice Church
Cathedral of Saint Peter
St. Paul's Cathedral
Basilica of S... | Notre Dame de Paris | general_qa | 84 |
The following is a multiple choice question (with answers).
===Question
Two block of mass m and 2m are placed one over the other as shown in fig. The coefficient of friction between m and 2m is $\mu $ and between 2m and ground is $\dfrac { \mu }{ 3 } $. If a horizontal force F is applied on upper block and T is tensio... | IF $F=\dfrac { \mu }{ 3 } mg,T=0$ | general_qa | 328 |
The following is a multiple choice question (with answers).
===Question
What is the main difficulty in using the Analytic Hierarchy Process to evaluate solution problems?
===Choices
Calculation of Matrix Eigenvalues and Eigenvectors
Determination of Evaluation Criteria
Identification of Solution Constraints
Generation... | Calculation of Matrix Eigenvalues and Eigenvectors | general_qa | 102 |
The following is a multiple choice question (with answers).
===Question
Given the open-loop transfer function of a system as $G(s) = \frac{5e^{-\tau{s}}}{s(0.2s+1)}$, use the Nyquist criterion to determine the range of $\tau$ for which the closed-loop system remains stable.
===Choices
$\tau < 2.2$
$\tau < 0.43$
$\tau ... | $\tau < 0.22$ | general_qa | 160 |
The following is a multiple choice question (with answers).
===Question
The machine-readable cataloging format adopted in our country is ______.
===Choices
JPMARC
AUSMARC
BRMARC
UKMARC
EUMARC
INDMARC
USMARC
CNMARC
RUMARC
FRMARC | CNMARC | general_qa | 70 |
The following is a multiple choice question (with answers).
===Question
Consider the same pedigree from the perspective of a linguistic anthropologist? Given the same choice of topics/questions, what do you think might most interest a linguistic anthropologist?
===Choices
What relationships are most important?
How is ... | What relationships are most important? | general_qa | 125 |
The following is a multiple choice question (with answers).
===Question
What is one of the following non-monetary measures of the value of human resources?
===Choices
Skill Set Inventory Method
Job Attitude Measurement Method
Organizational Culture Assessment
Workforce Efficiency Scale
Employee Satisfaction Index
Non-... | Job Attitude Measurement Method | general_qa | 84 |
The following is a multiple choice question (with answers).
===Question
Which of the following are ways for trace elements to migrate out of seawater? I. Ingestion by surface phytoplankton II. Adsorption by organic particulate matter III. Binding to iron and manganese nodules IV. Interaction with organic ligands
===Ch... | I, II, III | general_qa | 107 |
The following is a multiple choice question (with answers).
===Question
_____ refer to the products formed during the soil development process, where soil materials are re-leached, precipitated, and accumulated.
===Choices
Soil artifacts
Soil neoplasms
Soil particulates
Soil substrates
Soil compounds
Soil silicates
So... | Soil neoplasms | general_qa | 88 |
The following is a multiple choice question (with answers).
===Question
Which of the following weighs the least?
===Choices
4 g atom of N (atomic wt of N =14)
1 g atom of N (atomic wt of N =14)
1 mole of S ( atomic weight of S = 32 )
4 g atom of O (atomic wt of O =16)
5 g atom of N (atomic wt of N =14)
3 g atom of N (... | 2 g atom of N (atomic wt of N =14) | general_qa | 151 |
The following is a multiple choice question (with answers).
===Question
How many times is the sensitivity of the full-bridge connection method compared to the half-bridge single-arm connection method?
===Choices
7
1
2
8
6
9
3
4
10
5 | 4 | general_qa | 61 |
The following is a multiple choice question (with answers).
===Question
A 45-year-old woman has a 2-week history of increased anxiety, abdominal discomfort, irritability, and difficulty concentrating; she was robbed at knifepoint in a parking lot 3 weeks ago. She takes levothyroxine for hypothyroidism and uses an over-... | Acute stress disorder | general_qa | 242 |
The following is a multiple choice question (with answers).
===Question
The capacitor of Lauritsen's electrometer is 5 picofarads. In the ionization chamber, there are 100 $\alpha$ particles, each losing 3.9 million electron volts of energy per second. Try to calculate how much time is needed for the potential of the e... | 25 seconds | general_qa | 134 |
The following is a multiple choice question (with answers).
===Question
In a closed-loop control system, given
$$
G(s) = \frac{K(s + 9)}{s\big(s^{2} + 4s + 11\big)}, \qquad H(s) = 1
$$
what is the corresponding value of the gain $K$?
===Choices
0.5
2
1.5
2.5
0.1
4
0.75
5
1
3 | 1 | general_qa | 114 |
The following is a multiple choice question (with answers).
===Question
Using the RSA algorithm what is the value of cipher test c if the plain text $\mathrm{e}=7$ and $\mathrm{P}=5, \mathrm{q}=1 6 \& \mathrm{n}= 832$. Determine the Euler's totient function for the plain text.
===Choices
75
72
47
584
60
48
86
63
428
9... | 60 | general_qa | 110 |
The following is a multiple choice question (with answers).
===Question
The period of a particle executing SHM is $8\ s$. At $t = 0$ it is at the mean position. The ratio of the distances covered by the particle in the $1st$ second to the $2nd$ second is
===Choices
$$\sqrt {2} + 1$$
$$\dfrac{1}{\sqrt{3} + 2}$$
$$\dfra... | $$\dfrac {1}{\sqrt {2}}$$ | general_qa | 192 |
The following is a multiple choice question (with answers).
===Question
The basis for dividing the fiscal expenditures of Chinese governments at all levels is ( ).
===Choices
principle of unity of financial power and administrative power
principle of fiscal responsibility
principle of equal distribution
balance of rev... | principle of unity of financial power and administrative power | general_qa | 104 |
The following is a multiple choice question (with answers).
===Question
The plaintiff in a federal employment discrimination lawsuit served on the defendant 10 compound interrogatories, each of which had at least two or three discrete subparts. The employer defendant responded to the interrogatories and provided its an... | He cannot do anything, because the defendant waived any objection to the number of interrogatories by answering the extra questions. | general_qa | 315 |
The following is a multiple choice question (with answers).
===Question
A sound wave moving through water has a frequency of 256 Hz and a wavelength of 5.77 m. What is the speed of the wave?
===Choices
$$
\mathrm{1 4 9 0 ~ m / s.}
$$
$$
\mathrm{1 4 8 0 ~ m / s.}
$$
$$
\mathrm{1 4 4 5 ~ m / s.}
$$
$$
\mathrm{1 3 9 5 ~ ... | $$
\mathrm{1 4 8 0 ~ m / s.}
$$ | general_qa | 250 |
The following is a multiple choice question (with answers).
===Question
In corn, the allele *b* causes the kernel endosperm to be white, while *b+* is the wild-type purple. Another gene *w* (*waxy*) causes the kernel endosperm to be waxy, while *wx+* is the wild-type starchy. A third gene *cn* causes the cotyledon to b... | 22.8 | general_qa | 311 |
The following is a multiple choice question (with answers).
===Question
Kata Thermometer is used to measure ?
===Choices
Heat capacity of air
Maximum temperature
Temperature change over time
Rate of heat transfer
Minimum temperature
Rate of air temperature decrease
Cooling efficiency of air
Radiant heat
Cooling power ... | Cooling power of air | general_qa | 73 |
The following is a multiple choice question (with answers).
===Question
In which year was the Hong Kong Film Directors' Guild established?
===Choices
1998
1993
1995
1997
1990
1989
1992
1991
1994
1996 | 1991 | general_qa | 79 |
The following is a multiple choice question (with answers).
===Question
Who formed the Dubai-based band Sho? in June 2009?
===Choices
Zara Quiroga and Rizal Kahn
Zara Quiroga and Rizal Khan
Zara Quiroga and Rizal Khann
Zara Quiroga and Rizal Khaan
Zara Quiroga and Rizal Khannn | Zara Quiroga and Rizal Khan | general_qa | 92 |
The following is a multiple choice question (with answers).
===Question
Hydrogen gas is produced when zinc reacts with sulfu- ric acid:
$$
\mathrm{Z n} ( s ) \,+\, \mathrm{H}_{2} \mathrm{S O}_{4} ( a q ) \, \longrightarrow\, \mathrm{Z n} \mathrm{S O}_{4} ( a q ) \,+\, \mathrm{H}_{2} ( g )
$$
If 159 mL of wet $\mathrm{H... | $$
0. 4 0 2 \, \mathrm{g \, Z n}
$$ | general_qa | 397 |
The following is a multiple choice question (with answers).
===Question
A uniform slender rod of mass $m$ and length $L $ is released from rest, with its lower end touching a frictionless horizontal floor. At the initial moment, the rod is inclined at an angle $\theta=30^{\circ}$ with the vertical. Then the value of no... | $$3\sqrt{3} g/7$$ | general_qa | 155 |
The following is a multiple choice question (with answers).
===Question
Porifera, Rotifera, and Diploblastic animals belong to which groups?
===Choices
Mesozoa, Diploblasts, Protostomes
Coelomates, Parazoa, Diploblasts
Pseudocoelomates, Mesozoa, Deuterostomes
Protostomes, Diploblasts, Coelomates
Parazoa, Pseudocoeloma... | Parazoa, Pseudocoelomates, Mesozoa | general_qa | 185 |
The following is a multiple choice question (with answers).
===Question
Calculate the following products:
$$
\int_{|z|=1} \frac{\mathrm{d}z}{(z-a)^n (z-b)^n} \quad \left(\begin{array}{l} {|a| < 1} \\ {|b| < 1} \end{array}, a \neq b, n \text{ is a positive integer}\right)
$$
===Choices
$$1$$
$$\frac{\pi}{(b-a)^n}$$
$$\... | $$0$$ | general_qa | 216 |
The following is a multiple choice question (with answers).
===Question
Adults use the phrase 'If you don't listen anymore, the big bad wolf will come' to educate children. What kind of fear is this exploiting in children?
===Choices
fear of the unknown
experience
forecast
social anxiety
fear of loss
imaginary threats... | forecast | general_qa | 89 |
The following is a multiple choice question (with answers).
===Question
Argyll Robeson pupil is commonly seen in: March 2013
===Choices
Herpes simplex encephalitis
Encephalitis
Retinitis pigmentosa
Neurosyphilis
Neurosyphilis ocularis
Tuberculosis meningitis
Neurosyphilis late
Sarcoidosis
Diabetic retinopathy | Neurosyphilis | general_qa | 91 |
The following is a multiple choice question (with answers).
===Question
In a certain sea area during summer, the measured temperature gradient is -0.5°C/m, and the salinity s=35‰ is independent of depth. The sea surface temperature is 25°C. Find the sound speed gradient at a water depth of 40m.
===Choices
-2.25/s
-2.3... | -2.02/s | general_qa | 145 |
The following is a multiple choice question (with answers).
===Question
A prism of refracting angle 1°25' bends a beam of light through an angle of 1°15'. Calculate the index of refraction and the power of the prism in prism-diopters.
===Choices
Index of refraction: 1.880, Power of the prism: 1.25 prism-diopters
Index... | Index of refraction: 1.880, Power of the prism: 2.18 prism-diopters | general_qa | 335 |
The following is a multiple choice question (with answers).
===Question
It takes Kate k days to write a GRE math practice test. It takes John j days to write a GRE math practice test. If Kate and John work on a practice test in alternating 2-day shifts, it takes them 10 days when Kate starts and 10.5 days when John sta... | 36/7 days | general_qa | 146 |
The following is a multiple choice question (with answers).
===Question
Epidemic dropsy results from -
===Choices
Datura and Argemone mixed poisoning
Organophosphorus poisoning
Aluminum phosphide poisoning
Argemone and Belladonna poisoning
Dhatura and Belladonna poisoning
Belladonna poisoning
Arsenic poisoning
Argemon... | Argemone poisoning | general_qa | 90 |
The following is a multiple choice question (with answers).
===Question
At what level(s) do the geographic areas of responsibility for geographic Combatant Commanders are established?
===Choices
Tactical
Functional
Regional
Geographic
Political
Strategic
Operational
Economic
Diplomatic
National | Strategic | general_qa | 63 |
The following is a multiple choice question (with answers).
===Question
The sinusoidal uniform plane wave with a frequency of $f=500$ kHz propagates in an ideal medium, with the electric field amplitude vector $E_{\mathrm{m}} = e_{\mathrm{x}} 4 - e_{\mathrm{y}} + e_{\mathrm{z}} 2 \, \mathrm{kV/m}$ and the magnetic fiel... | $$
=-\ e_{x} 0. 3 7 5 \,+\, e_{y} 0. 2 7 3 \,+\, e_{z} 0.
$$ | general_qa | 624 |
The following is a multiple choice question (with answers).
===Question
For a closed-loop control system with open-loop transfer function $G(s)H(s)$, where $H(s)$ is the feedback transfer function, the error signal of the system is _____ .
===Choices
$Xor(s) - G(s)X0(s)$
$Xi(s) - X0(s)$
$Xi(s) - X0(s) + H(s)$
$Xi(s) -... | $Xi(s) - H(s)X0(s)$ | general_qa | 171 |
The following is a multiple choice question (with answers).
===Question
The water potential of a living plant cell is composed of osmotic potential (Ψs) and pressure potential (Ψp). Changes in the volume of a plant cell can cause alterations in turgor pressure, where $e$ represents the magnitude of the change in pressu... | Ψp(l)>Ψp(2) | general_qa | 255 |
The following is a multiple choice question (with answers).
===Question
The refractive index of a glass for X-rays with a wavelength of 0.70 Å is $1. 6 0 \times1 0^{-8}$ less than 1. What is the maximum refraction angle at which the X-rays can be totally reflected from the outer surface of the glass?
===Choices
$$
\al... | $$
\alpha_{m}=0. 1 0 2 5^{\circ}=6. 1 5 0^{\prime}
$$ | general_qa | 437 |
The following is a multiple choice question (with answers).
===Question
In hypothesis testing, not rejecting the null hypothesis refers to_______.
===Choices
There is no evidence to prove that the null hypothesis is correct
The null hypothesis is definitely correct
There is sufficient data to doubt the null hypothesis... | There is no evidence to prove that the null hypothesis is incorrect | general_qa | 124 |
The following is a multiple choice question (with answers).
===Question
The music for mass fitness aerobics is about ____ beats per 10 seconds.
===Choices
28
16
40
19
25
22
35
30
31
34 | 28 | general_qa | 64 |
The following is a multiple choice question (with answers).
===Question
Commonly used methods for measuring nutritional indices include calculation methods and ________.
===Choices
monitoring techniques
observation methods
inspection methods
evaluation methods
measurement methods
estimation methods
comparative methods... | measurement methods | general_qa | 67 |
The following is a multiple choice question (with answers).
===Question
The selection of reservoir flood control standards is based on what criteria?
===Choices
Regional political decisions.
The Height of the Dam
National Standards
Local wildlife population types.
The proximity to urban areas.
Water flow rate
Previous... | National Standards | general_qa | 83 |
The following is a multiple choice question (with answers).
===Question
Let $X=( S^{1} \times S^{1} ) \setminus\{p \}$ be a once-punctured torus.
How many connected, 3-sheeted covering spaces $f : Y \to X$ are there?
===Choices
14
9
13
5
11
7
12
10
6
8 | 7 | general_qa | 94 |
The following is a multiple choice question (with answers).
===Question
Mythology involves many fields such as ______, aesthetics, literature, and philosophy, but in the concept of primitive clans and tribesmen, the sacred belief in supernatural forces is inextricably linked to primitive religious beliefs.
===Choices
... | art | general_qa | 84 |
The following is a multiple choice question (with answers).
===Question
At the initial state, the air has a temperature of $T_{1}=480 \mathrm{K}$ and a pressure of $p_{1}=0.2 \mathrm{MPa}$. Through a process of state change, it is heated to $T_{2}=1100 \mathrm{K}$, at which point the pressure is $p_{2}=0.5 \mathrm{MPa}... | $$
678.3 \mathbf{kJ} / \mathbf{kg}
$$ | general_qa | 397 |
The following is a multiple choice question (with answers).
===Question
For any non-constant rational map \( R \) of degree \( d \), the theorem states that
\[
\sum v_R(z) - 1 = 2 \deg(R) - 2.
\]
Which of the following statements accurately reflects the conditions and implications of this theorem?
===Choices
If \( R(z... | The sum of valencies \( v_R(z) \) is invariant under conjugation of \( R \). | general_qa | 398 |
The following is a multiple choice question (with answers).
===Question
For matrix A = [[5, 4], [1, 2]], what are its eigen values?
===Choices
[3, 5]
[-1, 8]
[3, 4]
[4, 1]
[2, 6]
[5, 2]
[1, 6]
[0, 7]
[6, 1]
[2, 5] | [1, 6] | general_qa | 99 |
The following is a multiple choice question (with answers).
===Question
Which of the following options is the general diagnostic criteria of death?
===Choices
Non-reactive pupils
Fall in blood pressure
Cease of breathing
Complete organ failure
Deep unconscious state
Lack of heartbeat
Slow brain activity
Brain death
Lo... | Brain death | general_qa | 73 |
The following is a multiple choice question (with answers).
===Question
A uniform plane wave with a working frequency of $f = 400 \mathrm{~MHz}$ propagates in the $+z$ direction in a lossless dielectric medium and is incident perpendicularly onto an ideal conductive plane ($z=0$). If the distance between any two adjace... | 0.25 | general_qa | 165 |
The following is a multiple choice question (with answers).
===Question
Let $Q$ be the solid situated outside the sphere $x^2+y^2+z^2=z$ and inside the upper hemisphere $x^2+y^2+z^2=R^2$, where $R>1$. If the density of the solid is $\rho(x,y,z) = \frac{ 1 }{ \sqrt{x^2+y^2+z^2} }$, find $R$ such that the mass of the sol... | R = \frac{\sqrt{138}}{6} | general_qa | 272 |
The following is a multiple choice question (with answers).
===Question
The birthplace of the first test-tube baby in mainland China is ___.
===Choices
Shandong
Sichuan
Tianjin
Shanghai
Hunan
Jiangsu
Chongqing
Beijing
Guangzhou
Zhejiang | Beijing | general_qa | 69 |
The following is a multiple choice question (with answers).
===Question
138 gm of $N_{2}O_{4} (g)$ is placed in a $8.2L$ container at $300 K$. If the equilibrium vapour density of mixture was found to be $30.67$, then: $[R = 0.082 \ L.atm .mol^{-1}. K^{-1}]$
===Choices
The density of equilibrium mixture is $16.83 gm/l... | The density of equilibrium mixture is $16.83 gm/litre$ | general_qa | 257 |
The following is a multiple choice question (with answers).
===Question
In unbounded space, the electric potential generated by the charge distribution $\rho$ in the spherical coordinate system is $\varphi = \frac{q}{4\pi\varepsilon_0} \left[ \left( \frac{1}{a} + \frac{1}{r} \right) e^{-\frac{2r}{a}} - \frac{1}{r} \rig... | $\rho = -\frac{q}{\pi a^3} e^{-\frac{2r}{a}}$ | general_qa | 393 |
The following is a multiple choice question (with answers).
===Question
What is the starting temperature for direct reduction in a blast furnace?
===Choices
< 570°C
600~800°C
750~950°C
>570°C
850~1050°C
900~1200°C
650~850°C
800~1100°C
>1100°C
700~900°C | 800~1100°C | general_qa | 115 |
The following is a multiple choice question (with answers).
===Question
Given the open-loop transfer function of a unit negative feedback system as $G(s) = \frac{K(T_1s+1)}{s^2(T_2s+1)}, \quad K>0, \quad T_1>0, \quad T_2>0$, when $T_1=2$ and $T_2=1$, determine the value of $K$ that maximizes the phase margin of the sys... | $K = \frac{1}{2\sqrt{2}}$ | general_qa | 263 |
The following is a multiple choice question (with answers).
===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
===Choices
C melodic minor
E melodic major
B harmonic minor
F-sharp major | C melodic minor | general_qa | 74 |
The following is a multiple choice question (with answers).
===Question
If the main frequency of the seismic data is 35 Hz and the wave velocity in the destination layer is 3500 m/s, the vertical resolution of this seismic data in the destination layer is about _______.
===Choices
50m
20m
40m
15m
25m
45m
10m
60m
35m
3... | 25m | general_qa | 102 |
The following is a multiple choice question (with answers).
===Question
Find the pressure represented by a column of\
$$
2 \mathrm{~ c m ~ o f ~ m e r c u r y}.
$$
===Choices
$$
2 8 0 0. 3 \ \mathrm{N / m}^{2}
$$
$$
2 7 1 0. 8 \ \mathrm{N / m}^{2}
$$
$$
2 5 9 9. 9 \ \mathrm{N / m}^{2}
$$
$$
2 6 5 0. 7 \ \mathrm{N / m}... | $$
2 6 6 2. 9 \ \mathrm{N / m}^{2}
$$ | general_qa | 298 |
The following is a multiple choice question (with answers).
===Question
A block of mass $m$ height $2 h$ and width $2b$ rests on a flat car which moves horizontally with constant acceleration 'a' as shown in the figure. The coefficient of friction is $\mu$. The following data are given $b=0.6 m$, $h= 0.9 m$ $\mu = 0.5$... | the shortest distance in which it can be stopped from a speed of $20ms^{-1}$ with constant deceleration so that the block is not disturbed is $40m$. | general_qa | 449 |
The following is a multiple choice question (with answers).
===Question
In forest ecosystem engineering, the main goal of vegetation restoration is ( ).
===Choices
Boost local tourism industries systematically
Advance modern infrastructure projects
Develop eco-friendly recreational areas
Increase the aesthetic value o... | Enhance the ability to conserve water sources | general_qa | 94 |
The following is a multiple choice question (with answers).
===Question
In a coupled inductor circuit with three coils, the self-inductance coefficients are L1 = 4 H, L2 = 9 H, L3 = 16 H, and the mutual inductance coefficients are M12 = 2 H, M13 = 3 H, M23 = 4 H. The square value of the effective coupling coefficient k... | 0.25 | general_qa | 147 |
The following is a multiple choice question (with answers).
===Question
The velocity distribution in a pipe of radius $r_{0}$ is given by
$$
{\frac{u} {u_{m}}}=\left( 1-{\frac{r} {r_{0}}} \right)^{m}
$$
with $m < 1,$ Determine the momentum correction factor $\beta$ and ealculate the value of $\beta$ for $m=1 / 7$
===C... | $$
\frac{1} {4} \frac{( m+2 )^{2} \ ( m+1 )} {( 2 m+1 )}
$$
$$
1. 0 2
$$ | general_qa | 572 |
The following is a multiple choice question (with answers).
===Question
Determine the force required to raise a load of 3100 lbs., whena 2.5 in. triple threaded square power screw is used alongwith a collar having an outer diameter 4.5 in. and inner diameter3.0 in. The pitch of thread is 0.5 in. The operating forceis a... | 70.5 lbs | general_qa | 172 |
The following is a multiple choice question (with answers).
===Question
In engineering, what is the main basis for determining the structure of the pulley?
===Choices
Bearing load.
Cable length.
Chain stiffness.
Sleeve thickness.
Motor torque.
Gear ratio.
Shaft width.
Frame density.
Wheel size.
Pulley diameter. | Pulley diameter. | general_qa | 71 |
The following is a multiple choice question (with answers).
===Question
Male, 36 years old, stabbed by an iron nail on the sole of his left foot 1 week ago, bandaged it by himself, last night he suddenly felt tightness and constriction in his chest, and in the morning he woke up, had difficulty in opening his mouth and... | Toxemia | general_qa | 138 |
The following is a multiple choice question (with answers).
===Question
The electric field associated with a light wave is given by $E=E_0\sin[(1.57\times 10^7)(x-ct)]$(where, x and t are in metre and second). The stopping potential when its light is used in an experiment on photoelectric effect with the emitter having... | $1.2$eV | general_qa | 168 |
The following is a multiple choice question (with answers).
===Question
How much energy (at constant temperature and pressure) must be supplied as heat to 10.0 g of chlorine gas (as $Cl_{\mathrm{2}}$) to produce a plasma (a gas of charged particles, in this case ions) composed of Cl$^{-}$ and Cl$^{+}$ions? The enthalpy... | $$
-2. 4 8 \mathrm{~ k J ~ m o l^{-1} ~}
$$
$$
+ 1 1 5 4 \mathrm{~ k J ~ m o l}^{-1}
$$
$$
+ 1 6 3 \ \mathrm{k J}
$$ | general_qa | 823 |
The following is a multiple choice question (with answers).
===Question
Mr. Shao, 55 years old, developed lumbar pain with sensory disturbances in the anterolateral calf and medial foot after lifting heavy loads. Physical examination: lumbar spine L4-L5 spinous process and its right side pressure and pain, right straig... | 0.7 | general_qa | 152 |
The following is a multiple choice question (with answers).
===Question
The public organization system that makes decisions based on the majority principle belongs to ( ).
===Choices
Representative system
Hierarchical system
Committee system
Centralization system
Individual decision system
Federal system
Chief executi... | Committee system | general_qa | 75 |
The following is a multiple choice question (with answers).
===Question
Which of the following sets of phrases best summarizes the following product?
Product Title: KwikTool USA BBC450 Bad Blade Carver 4-1/2" 6 Tooth With 1" Arbor And 7/8", 5/8", And 20mm Reduction Rings
Product Description: KwikToo... | bad blade, kwik tool, wood blade | general_qa | 353 |
The following is a multiple choice question (with answers).
===Question
A large amount of literature information can only be easily retrieved and used if it is organized in a certain order. The compilation method is___.
===Choices
annotation method
referencing method
classification method
documentation method
indexing... | indexing method | general_qa | 84 |
The following is a multiple choice question (with answers).
===Question
The settlement method with the highest risk for the seller among the following is ( ).
===Choices
Documentary credit
M/T
Letter of credit
Telegraphic Transfer
D/P
Advance payment
Trade credit
Prepayment of goods
D/A
Cash on delivery | D/A | general_qa | 68 |
The following is a multiple choice question (with answers).
===Question
Switch ports are divided into two types: full-duplex and half-duplex. For a 100Mbps full-duplex switch with 5 ports, what is the bandwidth of each port?
===Choices
100Mbps
150Mbps
20Mbps
1Gbps
200Mbps
50Mbps
10Mbps
5Mbps
250Mbps
500Mbps | 100Mbps | general_qa | 103 |
The following is a multiple choice question (with answers).
===Question
Given that the relative retention value between components A and B is 1.5. When substance B is developed on a certain thin-layer plate, the spot is 8.3 cm from the origin, and the solvent front is 16 cm from the origin. If A is developed on the sam... | $$
1 2. 4 ( \mathrm{{\, c m )}}
$$ | general_qa | 284 |
The following is a multiple choice question (with answers).
===Question
In which year was the Jackie Chan International Action Film Festival held independently for the first time?
===Choices
2017
2012
2014
2019
2021
2015
2018
2013
2020
2016 | 2018 | general_qa | 84 |
The following is a multiple choice question (with answers).
===Question
The movie ' stripper' is adapted from a novel with the same name, who is the author of the novel?
===Choices
Carl Hiasen
Carl Hiassen
Carl Hassen
Carl Hiaasen
Carl Haasen | Carl Hiassen | general_qa | 63 |
The following is a multiple choice question (with answers).
===Question
According to the principle of crustal isostasy, how does the position of the Moho surface change from lowland plains to high mountainous regions?
===Choices
remains static regardless of surface elevation variations
inversely parallels shifts in su... | lowers with the elevation of the surface terrain | general_qa | 140 |
The following is a multiple choice question (with answers).
===Question
Heat of sublimation of $Na = x J $Ionization energy of $Na =yJ$Bond dissociation energy of $Cl_2 = a J $$e^-$ gain enthalpy of $Cl = -b J$Enthalpy of formation of $NaCl = -c J $Then what will S lattice energy of $NaCl(s)$ ?
===Choices
b + \left ( ... | $$b - \left ( x+y+c+\frac{a}{2} \right )$$ | general_qa | 264 |
The following is a multiple choice question (with answers).
===Question
Male, 58 years old, presented with "episodes of darkness in the left eye for 2 days, recurring with weakness of the right side of the limb for 12 hours". He had hypertension, diabetes mellitus, carotid atherosclerosis with plaque formation. Examina... | Cerebral infarction, left internal carotid artery | general_qa | 266 |
The following is a multiple choice question (with answers).
===Question
In photonics, the temperature sensitivity of a Fiber Bragg Grating (FBG) can be compensated by:
===Choices
using shorter fiber lengths
employing special grating design
increasing ambient humidity
increasing the bending of the fiber
applying a ther... | employing special grating design | general_qa | 101 |
The following is a multiple choice question (with answers).
===Question
An AC source $\varepsilon = {\varepsilon _o}\sin \left( {\omega t + \dfrac{\pi }{3}} \right)$ is connected in a circuit in which current is given by $i = {i_o}\sin \left( {\omega t + \dfrac{\pi }{6}} \right)$ : then which of the following option i... | Circuit consistor and capacitor in series with ${X_c} > R$ | general_qa | 278 |
The following is a multiple choice question (with answers).
===Question
If $f(x)$ is a continuous function on $\mathbb{R}$, then the set of points $C={(x,f(x))│x∈\mathbb{R}}⊆\mathbb{R}^2$ is
===Choices
uncertain
compact set
bounded set
closed set
neither
unbounded set
dense set
nowhere dense set
connected set
open set | closed set | general_qa | 99 |
The following is a multiple choice question (with answers).
===Question
A solid cylinder of radius $r$ and a hollow cylinder with inner and outer radius $r$ and $2r$ respectively of the same masses are placed on a horizontal table top.
If $P_{1}$ and $P_{2}$ are the pressure exerted due to solid and hollow cylinder re... | $$P_{1}=P_{2}$$ | general_qa | 216 |
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