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
Two persons A and B wear glasses of optical powers (in air) $P_1=+2 D$ and $P_2 = +1D$ respectively. The glasses have refractive index 1.5. Now they jump into a swimming pool and look at each other. B appears to be present at distance 2m (from A)... | Combined power of two glass (when placed in contact in air) is +3D | general_qa | 277 |
The following is a multiple choice question (with answers).
===Question
A spherical container with a radius of 10 cm is maintained at a temperature of $\mathbf{t}=27^{\circ} \, \mathbf{C}$, but there is a 1 $\operatorname{cm}^{2}$ area on the container wall that is kept at an extremely low temperature. The container is... | Approximately 3.25 seconds | general_qa | 269 |
The following is a multiple choice question (with answers).
===Question
Given a population $\mathrm{X} \sim \mathrm{N} \; \; ( \mu, \; \; \sigma^{2} )$, where $\sigma^{2}$ is known, and given a random sample $\mathbf{X}_{1}$, $\mathbf{x}_{2}, \ldots, \mathbf{x}_{n}$, to test the population mean $\mu$, let $\mathbf{H}_{... | If the null hypothesis $\mathrm{H}_{0}$ is accepted at a significance level $\alpha = 0.05$, then it must also be accepted at $\alpha = 0.01$. | general_qa | 482 |
The following is a multiple choice question (with answers).
===Question
The figure below shows a glass flask whose hemispherical base is of diameter 0.20 m. The height of the flask is 0.25 m. The flask is filled to the brim with 2.5 litres $(1 \:litre = 10^{-3} m^3)$ of water and sealed with a glass lid.
What is the ap... | 53.5 N | general_qa | 193 |
The following is a multiple choice question (with answers).
===Question
Let $m$ and $n$ be integers such that $1 < m \le 10$ and $m < n \le 100$ . Given that $x = \log_m n$ and $y = \log_n m$ , find the number of ordered pairs $(m, n)$ such that $\lfloor x \rfloor = \lceil y\rceil$ . ( $\lfloor a \rfloor$ is the greate... | 321 | general_qa | 182 |
The following is a multiple choice question (with answers).
===Question
Since the start of the reform and opening-up, China has created an economic miracle. When did China reach 99.3% of the world average level in terms of purchasing power parity (PPP)?
===Choices
2019
2018
2015
2014
2011
2013
2010
2017
2009
2016 | 2017 | general_qa | 107 |
The following is a multiple choice question (with answers).
===Question
Grassland is the land that mainly grows ____ plants, or both ____ and sparse ____ , can provide food and production sites for domestic and wild animals, and can provide a good living environment for human beings, other biological products and other... | Herbs, shrubs, trees | general_qa | 168 |
The following is a multiple choice question (with answers).
===Question
Given that the curve $\mathbf{y}=\mathbf{y} \quad(\mathbf{x})$passes through the origin and the tangent to the origin is parallel to the line $2 \mathbf{x}-\mathbf{y}-5=0$, While $\mathrm{y^{\prime\prime}-6 y^{\prime}+9 y=e^{3 x}}$, $\mathbf{y}$ (x... | $$\mathrm{x} \ ( \mathrm{x}+4 ) \ \ \mathrm{e}^{3 \pi} / 2$$ | general_qa | 423 |
The following is a multiple choice question (with answers).
===Question
Given that the atmospheric pressure gauge reads 755 mmHg and the absolute pressure is 0.5 bar, the corresponding vacuum level (mbar) is determined is().
===Choices
72.4kPa.
48.0kPa.
62.1mbar.
69.8kPa.
78.5mbar.
50.6kPa.
45.3kPa.
66.2mbar.
59.4kPa.... | 50.6kPa. | general_qa | 125 |
The following is a multiple choice question (with answers).
===Question
A factory needs 100 pieces of A product per month, the assembly cost of each batch is 5 yuan, and the storage cost of each product is 0.4 yuan per month. What is the EOQ and minimum fee? If 500 units are produced per month, what is the EOQ and mini... | 20,17.89 | general_qa | 180 |
The following is a multiple choice question (with answers).
===Question
An infinitely long cylindrical conductor with a radius of $\mathbf{R}$ has a current of size $\mathbf{I}$ uniformly flowing through its cross-section. The magnetic energy per unit length within the cylindrical conductor is ___.
===Choices
$\frac{\... | $\frac{\mu_{0} I^{2}} {1 6 \pi}$ | general_qa | 248 |
The following is a multiple choice question (with answers).
===Question
What is constant flow?
===Choices
Flow changes according to a certain pattern over time
Movement of particles remains consistent over periods
Temperature at any single point varies periodically
Density alterations occur randomly over time
Particle... | The elements at each spatial point do not change over time | general_qa | 105 |
The following is a multiple choice question (with answers).
===Question
Which of the following keys has three sharps as its key signature?
===Choices
Elegant feather mode of Gagaku with #D as the transposed palace
#F Dorian mode
Major harmonic key with E as the second degree
Harmonic minor key with #E as leading tone | Harmonic minor key with #E as leading tone | general_qa | 74 |
The following is a multiple choice question (with answers).
===Question
What is the adiabatic time scale?
===Choices
$\tau=\frac{\mathbf{U}^2} {\mathbf{L}}$
$\tau=\mathbf{L} + \mathbf{U}$
$\tau=\frac{\mathbf{U}} {\mathbf{L}}$
$\tau=\sqrt{\frac{\mathbf{L}} {\mathbf{U}}}$
$\tau=\frac{\mathbf{L}} {\mathbf{U}^2}$
$\tau=\f... | $\tau=\frac{\mathbf{L}} {\mathbf{U}}$ | general_qa | 215 |
The following is a multiple choice question (with answers).
===Question
Two brothers, who were beneficiaries of a testamentary trust, had a dispute over how the trustee should distribute the family vacation home, a trust asset. The elder brother sued the trustee in federal district court in State A, seeking immediate d... | No, because it is feasible to join the younger brother. | general_qa | 338 |
The following is a multiple choice question (with answers).
===Question
Which is correct about the division of powers between the NPC and the NPC Standing Committee?
===Choices
The National People's Congress decides on military strategies, and the Standing Committee of the National People's Congress manages national d... | 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 | general_qa | 288 |
The following is a multiple choice question (with answers).
===Question
Hume, through his skepticism about causality, ultimately believed that the causal relationship is ( )
===Choices
necessary and relative
innate
hypothetical
possible
necessary and probable
necessary
probable
absolute
contingent
relative | contingent | general_qa | 65 |
The following is a multiple choice question (with answers).
===Question
The capacity of a parallel plate condenser with air as a dielectric is $ 2 \mu F $. The space between the plates is filled with a dielectric slab with $K=5$. It is charged to a potential of $200V$ and disconnected from a cell. Work was done in remo... | $$0.032J$$ | general_qa | 172 |
The following is a multiple choice question (with answers).
===Question
The gas at rest in the tank is expelled after being accelerated through the nozzle, and a normal shock wave can be observed at the outlet. Given that the ambient pressure is 100 kPa and the ratio of the outlet cross-sectional area to the throat cro... | 194.8 kPa | general_qa | 168 |
The following is a multiple choice question (with answers).
===Question
If a general-purpose computer requires an average of $100 \mu s$ per complex multiplication and $20 \mu s$ per complex addition, then when $N=1024$, estimate the highest frequency at which real-time processing of signals can be achieved using FFT f... | $$
f_{\mathrm{m a x}} < {\frac{f_{s}} {2}}={\frac{6 6 6. 6 7} {2}} \mathrm{H z}=3 3 3. 3 \mathrm{H z}
$$ | general_qa | 721 |
The following is a multiple choice question (with answers).
===Question
What were likely the causes of the largest floods in prehistoric times?
===Choices
tectonic plate movements
hurricanes
gradual glacial dam weakening
sudden glacial lake outburst floods
gradual glacial dam failures
ice dam failures
meteorite impact... | ice dam failures | general_qa | 90 |
The following is a multiple choice question (with answers).
===Question
What is the model of the liquid oxygen kerosene engine used in the Common Core Booster (CCB)?
===Choices
LX-513
ZQ-297
WP-072
HM-154
SK-765
RD-180
YD-846
GT-401
VB-937
RJ-628 | RD-180 | general_qa | 102 |
The following is a multiple choice question (with answers).
===Question
What does H68 represent?
===Choices
Regular bronze with an average Sn content of 32%
Lead brass, with an average Cu content of 68%
Normal brass with an average Zn content of 30%
Normal brass with an average Cu content of 32%
Standard copper with a... | Ordinary brass with an average Zn content of 32% | general_qa | 156 |
The following is a multiple choice question (with answers).
===Question
Let (A, B) and (C) be n-order square matrices, and (ABC = E), then ( )
===Choices
(BAC = E)
(CAB = C)
(ABC = E)
(BCA = E)
(BAC = C)
(AB = E)
(CAB = E)
(ACB = E)
(BAC = B)
(CBA = E) | (BCA = E) | general_qa | 94 |
The following is a multiple choice question (with answers).
===Question
In the program below, the initial value of X is 5 and the initial value of Y is 10.
IF (X < 0){
DISPLAY ("Foxtrot")
} ELSE {
IF (X > Y){
DISPLAY ("Hotel")
} ELSE {
IF (Y > 0){
DISPLAY ("November")
} ELSE {
DISPLAY ("Yankee")
}
}
}
What is displayed... | November | general_qa | 129 |
The following is a multiple choice question (with answers).
===Question
Given that at 25°C, the cathodic reaction $0 + 2 \mathrm{e} \to \mathrm{R}$ is controlled by the diffusion step, both $\mathrm{O}$ and $\mathbf{R}$ are soluble, with $c_{\mathrm{O}}^{0}=0.1 \mathrm{~mol/L}$ and $c_{\mathrm{R}}^{0}=0$. The thickness... | $$
=-0. 1 4 2 V
$$ | general_qa | 333 |
The following is a multiple choice question (with answers).
===Question
If the insect is a fruit fly, and a male fruit fly with a genotype identical to the aforementioned parental female individual mates with a triple-recessive female fruit fly, what traits will be exhibited in their offspring?
===Choices
There are on... | There are still six phenotypes, but the proportions vary. | general_qa | 183 |
The following is a multiple choice question (with answers).
===Question
The dancer performs a cabriole devant, then the legs change and beat again, then change once more before the dancer lands on the leg he or she jumped from, leaving the other leg extended in the air. This describes:
I. Ailes de pigeon
II. Air, en l'... | I and IV | general_qa | 132 |
The following is a multiple choice question (with answers).
===Question
According to historical records, which Massagetae queen is said to have killed the Persian ruler Cyrus?
===Choices
Thamyras
Thamyris
Tamaris
Thamiris
Tomiris
Thomyris
Sparethris
Tomyris
Tamiris
Tamyris | Tomyris | general_qa | 77 |
The following is a multiple choice question (with answers).
===Question
A capacitor with an air dielectric, if the voltage between the plates remains unchanged, is filled with oil with a dielectric constant of $\varepsilon=4 \varepsilon_{0}$ between the plates. If the charge remains unchanged, what are the energy densi... | $4w_0,0.25w_0$ | general_qa | 213 |
The following is a multiple choice question (with answers).
===Question
An enterprise plans to build a communication network to provide services to the outside world. According to market forecasts, the probability of good business development in the future is 0.7, and the probability of poor business development is 0.3... | The expected net income of option 3 is $35.95 million | general_qa | 477 |
The following is a multiple choice question (with answers).
===Question
As the tides change, the water level in a bay varies sinusoidally. At high tide today at 8 A.M., the water level was 15 feet; at low tide, 6 hours later at 2 P.M., it was 3 feet. How fast, in feet per hour, was the water level dropping at noon toda... | π\sqrt{3}/2 | general_qa | 150 |
The following is a multiple choice question (with answers).
===Question
Choose the correct grouping for the first note of each beat in the following excerpt
L:1/8
M:2/4
K:C
V:1
!8va(! _B,e ^f(=F | G/)D/_D/C/ A,>_e!8va)! |] %2
===Choices
♭B ♯f^1 f a
♭B ♯f^1 f A
♭B ♯f^2 ♯f^1 a
♭B ♯f^2 f^1 a | ♭B ♯f^2 f^1 a | general_qa | 130 |
The following is a multiple choice question (with answers).
===Question
In which year was the NGC 1125 galaxy discovered?
===Choices
1787
1781
1788
1783
1782
1786
1784
1785
1789
1780 | 1785 | general_qa | 81 |
The following is a multiple choice question (with answers).
===Question
One mole of an ideal gas is kept enclosed under a light piston (area=$10^{-2}m^{2}$) connected by a compressed spring (spring constant $100\ N/m$). The volume of gas is $0.83^{3}$ and its temperature is $100\ K$. The gas is heated so tha... | $$1.5\ J$$ | general_qa | 202 |
The following is a multiple choice question (with answers).
===Question
The birth of radio broadcasting: On December 25, 1906, the successful experiment by American electrical engineering professor Fessenden from the University of Pittsburgh was the invention of ( ).
===Choices
Radio station
Vacuum Tube Receiver
Digit... | Experimental station | general_qa | 100 |
The following is a multiple choice question (with answers).
===Question
The Central Committee of the Communist Party of China and the Central Government are striving to enhance Chinese military security functions. In order to achieve this, they should further promote the governance of the military according to law and ... | Checks and Balances on the Exercise of Power | general_qa | 129 |
The following is a multiple choice question (with answers).
===Question
Based on progeny test results, perform thinning in the primary seed orchard to form a seed orchard free of_____.
===Choices
excessive competition
undesirable traits
invasive plants
competing species
unwanted mutations
suboptimal growth
harmful pes... | inferior genes | general_qa | 86 |
The following is a multiple choice question (with answers).
===Question
What plant is considered a beneficial weed and is commonly used for soups in Japan and Hong Kong?
===Choices
Burdock
Japanese Knotweed
Wild Japanese Knotweed
Japanese Burdock
Wild Japanese Burdock
Wild Burdock
Wild Kudzu
Dandelion
Kudzu | Burdock | general_qa | 75 |
The following is a multiple choice question (with answers).
===Question
We now define an algorithm: The definition of a(n) is the number of perfect riffle shuffles required to return a deck of 2n cards to its original order. Given the input x_list (a series of values): [58, 59, 60, 61, 62, 63, 64, 65, 66, 67], determin... | [44, 12, 24, 110, 20, 100, 14, 14, 130, 18] | general_qa | 538 |
The following is a multiple choice question (with answers).
===Question
Conduct a model test study on the layout of an overflow dam for a specific project. It is known that the maximum discharge flow of the overflow dam is $197 \mathrm{m}^{3}/\mathrm{s},$ and the laboratory's water supply capacity is $0.04 \mathrm{m}^{... | $$
\lambda_{l}=5 7. 0 9
$$ | general_qa | 289 |
The following is a multiple choice question (with answers).
===Question
The maximum and minimum quantization intervals in the thirteen-segment quantization of $A$ differ by _ times.
===Choices
52
48
36
60
58
50
44
56
62
64 | 64 | general_qa | 69 |
The following is a multiple choice question (with answers).
===Question
What is the relationship between the critical Reynolds number $Re_{\mathrm{cr}}$ for two different fluids, water and air, flowing inside a circular tube?
===Choices
$Re_{\mathrm{cr}}$Water$\eqsim Re_\mathrm{cr}$Air
$Re_{\mathrm{cr}}$Water$.= Re_\m... | $Re_{\mathrm{cr}}$Water=$Re_\mathrm{cr}$Air | general_qa | 230 |
The following is a multiple choice question (with answers).
===Question
What is the molarity of ${ F }^{ - }$ ions in a saturated solution of $Ba{ F }_{ 2 }$?
$$({ K }_{ sp } = 1.0\ \times \ { 10 }^{ -6 })$$
===Choices
$$1.4 \times 10^{-2}$$
$$1.0\ \times \ { 10 }^{ -4 }$$
$$1.5\ \times \ { 10 }^{ -2 }$$
$$1.0\ \times... | $$1.0\ \times \ { 10 }^{ -2 }$$ | general_qa | 241 |
The following is a multiple choice question (with answers).
===Question
At present, the main implementing institutions of secondary education in the UK are county secondary schools, direct funding public schools, and ().
===Choices
city technical college
village development academies
district science academies
provinc... | city technical college | general_qa | 93 |
The following is a multiple choice question (with answers).
===Question
The power series expansion of $f ( \, z \, )={\frac{4 z^{2} \!+\! 3 0 z \!+\! 6 8} {( \, z \!+\! 4 \, )^{2} ( \, z \!-\! 2 \, )}}$ in terms of $z$ is ().
===Choices
$$
= \ \sum_{n=0}^{n} \ \left[ \ (-1)^{n+1} \frac{n-2} {5^{n+3}}+\frac{3} {5^{n+1}... | $$
= \ \sum_{n=0}^{n} \ \left[ \ ( \,-1 \, )^{n+1} \frac{n+1} {2^{2 n+3}}-\frac{1} {2^{n-1}} \right] z^{n} \,, \ | \ z \ | < 2.
$$ | general_qa | 819 |
The following is a multiple choice question (with answers).
===Question
It is known that a certain analytical balance has an accuracy of up to ±0.01mg. To ensure that the weighing error of the sample does not exceed ±0.1%, which of the following amount of the sample at least must be weighed?
===Choices
35 mg
15 mg
10 ... | 20 mg | general_qa | 107 |
The following is a multiple choice question (with answers).
===Question
A fish is vertically below a flying bird moving vertically down toward water surface. The bird will appear to the fish to be
===Choices
Moving slower than its real speed and farther than its real distance
Moving slower than its real speed and away... | Moving faster than its speed and also away from the real distance | general_qa | 167 |
The following is a multiple choice question (with answers).
===Question
Which of the following options is not conducive to people adapting to long-term life in high-altitude regions?
===Choices
Lower hemoglobin levels
Reduced oxygen uptake in tissues
Increased respiratory rate
Enhanced digestion efficiency
Decreased b... | Increased respiratory rate | general_qa | 98 |
The following is a multiple choice question (with answers).
===Question
The specialized term used in international trade to denote the division of risks, responsibilities, and costs between the parties involved, as well as the composition of the commodity price, is called ( ).
===Choices
Trade terms
Market sharing pri... | Trade terms | general_qa | 87 |
The following is a multiple choice question (with answers).
===Question
"Human nature is like a turbulent stream. If it is diverted from the east, it will flow east; if it is diverted from the west, it will flow west. Human nature is neither good nor bad, just as water is neither east nor west." Whose point of view doe... | Gaozi | general_qa | 122 |
The following is a multiple choice question (with answers).
===Question
Let the function $f(x) = mathop {lim }limits_{n to infty } frac{{{x^{2n + 1}} + 1}}{{{x^{2n + 1}} - {x^{n + 1}} + x}}$, then which of the following statements about its discontinuities is correct?
===Choices
$x=1$ is a removable discontinuity
$x=0... | $x=1$ is a removable discontinuity | general_qa | 161 |
The following is a multiple choice question (with answers).
===Question
Given a 3x3 matrix $A=\left( \begin{matrix} {{{a_{1}}}} & {{{c_{1}}}} & {{{d_{1}}}} \\ {{{a_{2}}}} & {{{c_{2}}}} & {{{d_{2}}}} \\ {{{a_{3}}}} & {{{c_{3}}}} & {{{d_{3}}}} \\ \end{matrix} \right), \ B=\left( \begin{matrix} {{{b_{1}}}} & {{{c_{1}}}} &... | $$45
$$ | general_qa | 285 |
The following is a multiple choice question (with answers).
===Question
Two vehicles $A$ and $B$ are moving towards each other with same speed $u = 25 m/s$. They blow horns of the same frequency $f = 550 \ Hz$. Wind is blowing at speed $w = 20 \ m/s$ in the direction of motion of $A$. The driver of vehicle $A$ hears th... | $$3$$ | general_qa | 183 |
The following is a multiple choice question (with answers).
===Question
A car is accelerating on a horizontal road with acceleration = 20 $m/s^2$. A box that is placed inside the car, of mass m = 10 kg is put in contact with the vertical wall as shown. The friction coefficient between the box and the wall is $\mu$ = 0.... | The friction force acting on the box will be 100 N | general_qa | 256 |
The following is a multiple choice question (with answers).
===Question
A noninterest-bearing note with a face value of $600 and a term of 30 days dated April 5 was discounted April 15 at a rate of 5%. What were the proceeds?
===Choices
$601.67
$604.17
$595
$603.33
$598.33
$602.50
$596.67
$600
$597.50
$599.33 | $598.33 | general_qa | 134 |
The following is a multiple choice question (with answers).
===Question
Two small rings $O$ and $O'$ are put on two vertical stationary rods $AB$ and $A'B'$, respectively. One end of an inextensible thread is tied at point $A'$. The thread passes through ring $O$' and its other end is tied to ring $O$. Assuming that ri... | $$v_1 \left[ \frac{2 \sin^2 \left( \frac{\alpha}{2} \right)}{\cos \alpha} \right]
$$ | general_qa | 482 |
The following is a multiple choice question (with answers).
===Question
The element with a half-life of 30 days, Cm$^{2+1}$, emits an $\alpha$ particle with an energy of 6.25 MeV. Calculate the heat released from a micro-test tube containing a 2 mg solution of the salt of Cm$^{2+1}$.
===Choices
3.58 joules/second.
0.5... | 0.69 calories/second. | general_qa | 168 |
The following is a multiple choice question (with answers).
===Question
What are the components of a remote sensing technology system?
===Choices
Heat emissions from the observed entity, content collection, content reception, content analysis, content usage.
Light reflections from the target object, detail capture, de... | Electromagnetic waves of the target object, information acquisition, information reception, information processing, information application. | general_qa | 223 |
The following is a multiple choice question (with answers).
===Question
In which year did Arshad Sauleh (an artist and a radio broadcaster of Srinagar, Kashmir) win the Merit Award from the State Academy of Art, Culture, and Language Srinagar?
===Choices
2009
2016
2013
2018
2010
2015
2011
2017
2012
2014 | 2011 | general_qa | 110 |
The following is a multiple choice question (with answers).
===Question
The $lpha$-particles with initial kinetic energy $4.8$ mev are shot at gold atoms $(z=79)$. The potential of $lpha$-particle at the closest distance to the gold nucleus is
===Choices
1.2 MV
1.8 MV
3.2 MV
3.6 MV
3.0 MV
$$zero$$
$$9.6 MV$$
$$4.8 M... | $$2.4 MV$$ | general_qa | 124 |
The following is a multiple choice question (with answers).
===Question
What type of connection does the jaw arch and brain skull of reptiles belong to?
===Choices
Dual-joint type
Multi-link form
Four-joint style
One
Double-joint system
Single-joint system
Two-piece unit
Two-joint type
Triple-joint form
Three-joint ty... | Two-joint type | general_qa | 78 |
The following is a multiple choice question (with answers).
===Question
Sensory deficits that occur when the spinal hemispheres are damaged (Brown-Saward syndrome) manifest themselves in what symptom below the plane of the damaged stage?
===Choices
Contralateral deep sensory deficits, ipsilateral pain and temperature ... | Ipsilateral deep sensory deficits, contralateral pain and temperature deficits | general_qa | 160 |
The following is a multiple choice question (with answers).
===Question
The acceptable ambient temperature of summer in terms of thermal comfo is
===Choices
28 to 32degC
23 to 27degC
23 to 26degC
21 to 25degC
24 to 29degC
24 to 28degC
25 to 29degC
22 to 26degC
27 to 28degC
20 to 23degC | 23 to 27degC | general_qa | 120 |
The following is a multiple choice question (with answers).
===Question
Consider the regular expression \((aa)^*(bb)^*b\), which defines a specific language \(L((aa)^*(bb)^*b)\). Which of the following options correctly describes the composition of this language?
===Choices
A string consisting of any number of consecu... | Consists of any number of \(aa\) pairs, followed by any number of \(bb\) pairs, and the entire string must end with a single \(b\). | general_qa | 364 |
The following is a multiple choice question (with answers).
===Question
Each time the pump is used, it compresses air with an initial pressure $p_{0} = 1 \times 10^{5} \mathrm{~Pa}$, temperature $t_{0} = -3 \mathrm{°C}$, and volume $V_{0} = 4 \mathrm{~L}$ into the container. The container has a volume of $V = 1.5 \time... | 262 | general_qa | 220 |
The following is a multiple choice question (with answers).
===Question
For data in online transaction processing systems and data warehouse systems, the following statement is true ( ).
===Choices
In online transaction processing systems, data is generally organized in a way that is oriented towards business applicat... | In online transaction processing systems, data is generally organized in a way that is oriented towards business applications, whereas in data warehouse systems, data is typically organized according to themes for analysis. | general_qa | 303 |
The following is a multiple choice question (with answers).
===Question
The preparation of pill blocks is crucial for molding honey pills. A high-quality pill block should be ()
===Choices
Moderately porous
Slightly dry on the surface
Very slippery when held
Slightly moist overall
Completely rigid in texture
Highly pl... | Highly plastic | general_qa | 78 |
The following is a multiple choice question (with answers).
===Question
Which Inca flag is listed alongside the tricolor flag as the national flag in the Bolivian constitution?
===Choices
The Qollasuyu Inca flag
The Suyu Inca flag
The Kollasuyu Inca flag
The Kullasuyu Inca flag
The Colla Inca flag
The Collasuyu Inca f... | The Collasuyu Inca flag | general_qa | 125 |
The following is a multiple choice question (with answers).
===Question
It is generally believed that the content of CaC03 in oceanic sediments is more than 65% _____, which is mainly composed of foraminifera oods. It is mainly distributed in the marginal parts of the tropical and subtropical deep oceans of the world.
... | calcium mud | general_qa | 118 |
The following is a multiple choice question (with answers).
===Question
Solve the following problem: Given an NPN-type BJT with $I_{\mathrm{EQ}} = 0.1 \ \ \mathrm{mA}$ and $I_{\mathrm{ES}} = 6 \times 10^{-15} \ \mathrm{mA}$, where the base width modulation effect can be ignored. Find the value of $V_{\mathrm{BEQ}}$.
=... | $$
\approx0. 7 9 \mathrm{~ V}
$$ | general_qa | 283 |
The following is a multiple choice question (with answers).
===Question
For the reaction in equilibrium,
(I) $CO(g)+\dfrac{1}{2}O_2(g)\rightleftharpoons CO_2(g)$
(II) $2CO(g)+O_2(g)\rightleftharpoons 2CO_2(g)$Equilibrium constantFree energy change$K_1$$\Delta G_1$$K_2$$\Delta G_2$Then?
===Choices
$$K_1=K^2_2, \Delta G... | $$K_1=2K_2, \Delta G_1=2\Delta G_2$$ | general_qa | 347 |
The following is a multiple choice question (with answers).
===Question
The Sun will reside on the main sequence for $1 0^{1 0}$ years. If the luminosity of a main-sequence star is proportional to
the fourth power of the star's mass, what is the mass of a star that is just now leaving the main sequence in a cluster tha... | the star is 2.9 times more massive than the Sun | general_qa | 227 |
The following is a multiple choice question (with answers).
===Question
The Xinhai Revolution is referred to as an "incomplete revolution" or a "failed revolution," mainly because ( )
===Choices
it did not establish a democratic republic
it did not establish a stable and effective government
it did not abolish the imp... | it did not fulfill the requirements of a democratic revolution | general_qa | 141 |
The following is a multiple choice question (with answers).
===Question
What type of placentation does the pistil forming the capsule possess?
===Choices
Apical axis placenta, centrally focused placenta, and free placentation
Central axis placenta, centrally aligned placenta, and basal placentation
Middle axis placent... | Central axis placenta, centrally positioned placenta, and lateral placentation | general_qa | 204 |
The following is a multiple choice question (with answers).
===Question
The deepest ocean sediment composed of terrigenous clay and silt is ( ). Among them, clay minerals account for $5 \, 0 \% \sim7 \, 0 \%$, containing a certain amount of feldspar, quartz, hornblende and pyroxene and other rock-forming minerals.
===... | Pelagic Clay | general_qa | 127 |
The following is a multiple choice question (with answers).
===Question
In a balanced three-phase circuit, the power factor of the load is known to be lagging 0.8. If the input voltage remains unchanged, what is needed to make the power factor 1.0?
===Choices
Increase reactive capacitive load
Decrease impedance of the... | Increase reactive capacitive load | general_qa | 119 |
The following is a multiple choice question (with answers).
===Question
If $r=5\times 10^{-4}m\quad \rho=10^3Kgm^{-3},g=10m/s^{2},T=0.11Nm^{-1}$ the radius of the drop when it detached from the dropper is approximately:
===Choices
$$2.0\times 10^{-3}m$$
$$1.4\times 10^{-3}m$$
$$2.5 \times 10^{-3}m$$
$$1.5 \times 10^{-... | $$1.4\times 10^{-3}m$$ | general_qa | 228 |
The following is a multiple choice question (with answers).
===Question
A bottle of nitrogen and a bottle of helium have the same density and the same average kinetic energy of molecules, and both are in equilibrium. Under the premise of meeting the above conditions, which of the following descriptions are correct?
==... | The temperature is the same, but the pressure of helium is greater than the pressure of nitrogen. | general_qa | 213 |
The following is a multiple choice question (with answers).
===Question
The general law of the interrelationship between the "two kinds of production" is ().
===Choices
The production of human beings themselves must be compatible with the production of material goods.
The production of human beings and material goods ... | The production of human beings themselves must be compatible with the production of material goods. | general_qa | 173 |
The following is a multiple choice question (with answers).
===Question
If the diet is primarily based on cereals with few animal-based foods, what is the human body likely to lack?
===Choices
Serine
Arginine
Valine
Leucine
Tryptophan
Histidine
Threonine
Methionine
Isoleucine
Lysine | Lysine | general_qa | 79 |
The following is a multiple choice question (with answers).
===Question
Which of the following is incorrect?
===Choices
$\left( \frac { \partial U } { \partial V } \right) _ { T } = 0$ for an ideal gas.
A real gas behaves like an ideal gas over a wide range of pressure $( - 100$ atm ) at critical temperature of the ga... | A real gas behaves like ideal gas over a wide range of pressure $( - 100$ atm $)$ at Boyle point. | general_qa | 162 |
The following is a multiple choice question (with answers).
===Question
Locking data objects can cause problems with live locks and deadlocks. A simple way to avoid live locks is to adopt the policy of ( ).
===Choices
Sequential locking method
Sequential blocking method
Priority inversion handling
Minimal resource all... | First come, first served | general_qa | 93 |
The following is a multiple choice question (with answers).
===Question
During a post-mortem examination, the odor of bitter almond is found in cases of _______ poisoning.
===Choices
Hydrogen cyanide
Acetic acid
Nitric acid
Carbolic acid
Hydrochloric acid
Hydrocyanic acid
Hydrogen sulfide | Hydrocyanic acid | general_qa | 74 |
The following is a multiple choice question (with answers).
===Question
What is the molar mass of Malathion as a compound in g/mol?
===Choices
330.358
330.372
330.362
330.385
330.365
330.352
330.375
330.348
330.355
330.368 | 330.358 | general_qa | 113 |
The following is a multiple choice question (with answers).
===Question
A random poly(styrene-butadiene) copolymer has a mumber-average molecular weight of 350,000 g/mol and a degree of polymerization of 500 0. Compute the fraction of styrene and butadiene repeat units in this copolymer.
===Choices
0.57
0.50
0.62
0.68... | 0.68 | general_qa | 129 |
The following is a multiple choice question (with answers).
===Question
Which of the following infectious diseases can still transmit pathogens during the recovery period?
===Choices
Hepatitis, mumps
Whooping cough, epidemic encephalitis B
Measles, chickenpox
Malaria, yellow fever
Polio, cholera
Influenza, measles
Ebo... | Typhoid, diphtheria | general_qa | 105 |
The following is a multiple choice question (with answers).
===Question
The diameter of the impulse turbine is 10.0 ft (3.05 m), with a bucket angle $\beta_{2}=160^{\circ}$. If the nozzle jet velocity $V_{1}$ = 200 ft/sec (61 m/s), nozzle diameter = 2.0 in (5.08 cm), and rotational speed $= 240 \mathrm{r/min}$, what is... | $$
2 7 8. 6 h p
$$ | general_qa | 293 |
The following is a multiple choice question (with answers).
===Question
What is meant by "asymmetrical beats"?
===Choices
the notes have different values
the tempo changes sporadically
the melody skips random notes
the pitch varies unexpectedly
the accents shift unpredictably
the beats are at irregular intervals
the c... | the bars are not of the same length | general_qa | 92 |
The following is a multiple choice question (with answers).
===Question
When was the new Enfield rifle, which used greased cartridges, introduced to the British Indian Army?
===Choices
November 1806
December 1857
April 1857
December 1856
January 1856
February 1856
February 1857
March 1857
January 1858
January 1857 | January 1857 | general_qa | 107 |
The following is a multiple choice question (with answers).
===Question
In the 17th and 18th centuries, the education targets of primary schools in Britain were mainly__
===Choices
Children of the emerging bourgeoisie
Children of the poor
Offspring of artists and writers
Children of the nobility
Students from prestigi... | Children of the poor | general_qa | 99 |
The following is a multiple choice question (with answers).
===Question
On what day, month, and year did the Palmolive Beauty Box Theater radio program stop being broadcast?
===Choices
October 6, 1937
October 21, 1937
October 26, 1936
October 16, 1936
October 16, 1938
October 1, 1937
October 16, 1937
October 26, 1938
... | October 6, 1937 | general_qa | 146 |
The following is a multiple choice question (with answers).
===Question
Two balls A and B moving in the same direction collide. The mass of B is p times that of
===Choices
$$p>= \dfrac{q}{q+1}$$
$$p>-1$$
$$\dfrac{p+q}{pq+q}$$
$$p>= \dfrac{q}{q+2}$$
$$e=\dfrac{p+q}{pq-p}$$
$$p>= \dfrac{q}{q-4}$$
$$p>= \dfrac{q}{q-1}$$
... | $$p>= \dfrac{q}{q-2}$$ | general_qa | 179 |
The following is a multiple choice question (with answers).
===Question
Ig $^{210}_{84}Po (t_{1/2} = 138. 4 \,days)$ is disintegrated in a sealed tube at NTP. How much helium will be accumulated after $69.2$ days?
===Choices
$$96 \,ml$$
$$68 \,ml$$
$$320 \,ml$$
$$64 \,ml$$
$$680 \,ml$$
$$32 \,ml$$
$$16 \,ml$$
$$160 \,... | $$32 \,ml$$ | general_qa | 150 |
The following is a multiple choice question (with answers).
===Question
Two particles $A$ and $B$ each of mass $m$ are attached by a light in-extensible string of length $2l$. The whole system lies on a smooth horizontal table with $B$ initially at a distance $l$ from $A$. The particle at end $B$ is projected across th... | $$v_{A}=\displaystyle \frac{u \sqrt 3}{4}$$ | general_qa | 355 |
The following is a multiple choice question (with answers).
===Question
The relationship between the truth values of "Xiao Wang is a student" and "Xiao Wang is not a student" is:
I. Cannot both be true, can both be false
II. Can both be true, can both be false
III. Cannot both be true, cannot both be false
IV. Truth im... | III,IV,V | general_qa | 143 |
The following is a multiple choice question (with answers).
===Question
The dissociation constant of diprotic weak acid $Ka_1$ $(H_2A)=10^{-7}$ and $Ka_2$ $(H_2A)=10^{-11}$. The equilibrium constant $H_2A+2HO^-\leftrightharpoons A^{-2}+2H_2O$ is
===Choices
$$10^{-10}$$
$$10^{-24}$$
$$10^{-17}$$
$$10^{-18}$$
$$10^{-20}... | $$10^{-18}$$ | general_qa | 181 |
The following is a multiple choice question (with answers).
===Question
Methyl methacrylate ($\mathbf{M}_{1}$) and butadiene ($\mathbf{M}_{2}$) undergo free radical copolymerization at 60°C. What ratio of ingredients should be used to achieve a copolymer with a uniform composition be obtained? $r_{1}=0.25, \; \; r_{2}=... | 18:82 (mass ratio) | general_qa | 194 |
The following is a multiple choice question (with answers).
===Question
() is a special line scheduling form organized for the transportation of employees of relevant units to and from work or students to and from school.
===Choices
Scheduled boat
Allocated bicycle
Fixed bus
Fixed route
Flexible train
Reserved car
Var... | Fixed bus | general_qa | 74 |
The following is a multiple choice question (with answers).
===Question
In enterprises, for 6~10kV lines that are not long, the cross-section is generally selected based on what criteria?
===Choices
Optimal thermal condition
Standard voltage standards
Safe current capacity
Febrile Conditions
Required electrical resist... | Febrile Conditions | general_qa | 89 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.