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
A mixture of oil (sp. gr. = 0.88) and air consists of drops of oil witha diameter of 3.5 × 10^-5 ft. If a settling time of 90 seconds is allowed, find the maximum height of the chamberrequired for the oil drops to settle. Take density and viscosity... | 0.9 ft | general_qa | 167 |
The following is a multiple choice question (with answers).
===Question
When the epistemic relation between concept S and concept P is fully dissimilar, there must be ( ).
===Choices
SAP is indeterminate
SAP is true
SAP is false
SIP is true
SOP is true
SEP is indeterminate
SIP is indeterminate
SEP is true
SOP is false... | SEP is true | general_qa | 88 |
The following is a multiple choice question (with answers).
===Question
Which of the following plants uses its leaves as the medicinal part?
===Choices
Tian Nan Xing
Chrysanthemum
Elderberry
Dendrobium
Mulberry
Bamboo | Mulberry | general_qa | 57 |
The following is a multiple choice question (with answers).
===Question
A ball of mass $m$ is attached to the lower end of a light vertical spring of force constant $k$. The upper end of the spring is fixed. The ball is released from rest with the spring at its normal (unstretched) length, and comes to rest again after... | The ball will have an upward acceleration equal to $g$ at its lowermost position. | general_qa | 301 |
The following is a multiple choice question (with answers).
===Question
The amount of metal deposited at cathode on passing electric current of 0.75 ampere in aqueous ferric sulphate solution for 30 minutes, will be -(atomic wt. of Fe $= 56 )$
===Choices
0.00870 g
0.00435$g$
0.00405\mathrm{~g}
0.522$\mathrm { g }$
0.0... | 0.00435$g$ | general_qa | 166 |
The following is a multiple choice question (with answers).
===Question
Company A is a newly established high-tech enterprise in a rapid development phase, currently focusing on market development. Company B is a large state-owned enterprise with a long operating history, mature products, and stable production. Conside... | I and II | general_qa | 163 |
The following is a multiple choice question (with answers).
===Question
The X-ray diffraction experiment measured the edge length of the face-centered cubic unit cell of metallic silver to be $408.6 \mathrm{~pm}$. The mass of silver per cubic centimeter is 10.5 g. Given that the relative atomic mass of $\mathrm{Ag}$ is... | $6.03\times 10^{23}\ \text{mol}^{-1}$ | general_qa | 326 |
The following is a multiple choice question (with answers).
===Question
Using gel filtration chromatography to separate the following mixture of four proteins, which one will elute from the chromatographic column first?
===Choices
Insulin (5.7 kDa)
Myoglobin (17.8 kDa)
Ovalbumin (45.0 kDa)
Beta-lactoglobulin (36.2 kDa... | Rabbit Phosphorylase B (97.4 kDa) | general_qa | 162 |
The following is a multiple choice question (with answers).
===Question
In terms of the speed of the information flow, () is the least efficient.
===Choices
High-Speed Bus
External Bus
Multiple Bus Systems
Internal Bus
Dual Bus
Single Bus
Parallel Bus
Three-Bus System
Serial Bus
Low-speed bus | Single Bus | general_qa | 67 |
The following is a multiple choice question (with answers).
===Question
What is Visual Texture?
===Choices
In art and design, the texture on a two-dimensional space reflects realistic surface details, forming a
In music and composition, the layering of different tones creates a complex auditory texture that depends
In... | In art and design, the texture on a two-dimensional plane is an imitation of tactile surface textures, forming a visual texture that depends on tactile experience for perception. | general_qa | 269 |
The following is a multiple choice question (with answers).
===Question
Estimate the amount of mass lost by Comet Halley during its most recent trip through the inner Solar System. Take into consideration the fact that the comet exhibits significant activity only during a short period of time near perihelion (an interv... | $$
1 2 5 \mathrm{~ t r i p s}.
$$ | general_qa | 286 |
The following is a multiple choice question (with answers).
===Question
What types of vertebrate kidneys can be divided into and what are they?
===Choices
Holonephros, pronephros, dorsal nephros, mesonephros, metanephros
Metanephros, pronephros, mesonephros, diurnephros, nephros
Holonephros, pronephros, mesonephros, m... | Holonephros, pronephros, dorsal nephros, mesonephros, metanephros | general_qa | 267 |
The following is a multiple choice question (with answers).
===Question
Assume all gases are perfect unless stated otherwise. Unless otherwise stated, thermodynamic data are for 298.15 K. Calculate the final pressure of a sample of carbon dioxide that expands reversibly and adiabatically from $57.4 \mathrm{kPa}$ and $1... | 22$\text{kPA}$ | general_qa | 175 |
The following is a multiple choice question (with answers).
===Question
A graduate student's dissertation chair, Dr. X, turns out to be of little help, and the student ends up obtaining advice and assistance from an associate professor, Dr. Z. Dr. X does review the dissertation when it is completed and she is listed as... | Dr. Z should be listed as second author if her contribution warrants it. | general_qa | 282 |
The following is a multiple choice question (with answers).
===Question
There is a rubber ball, which is in a free state when the pressure of the gas inside it is the same as the atmospheric pressure, at 0.1 MPa, and the volume is $0.3 \mathrm{m}^{3}$. The balloon is heated by a flame, causing its volume to double and ... | $$
0.360kg
$$ | general_qa | 229 |
The following is a multiple choice question (with answers).
===Question
Consider the following closed-loop control system:
$$
\frac{C(s)}{R(s)} = \frac{\omega_{n}^{2}}{s^{2} \,+\, 2\zeta\omega_{n}s \,+\, \omega_{n}^{2}}
$$
To make the system's response to a step input signal have approximately 5% overshoot and a settli... | $$
w_{n}=2. 9 0 \ r a d / s e c
$$ | general_qa | 357 |
The following is a multiple choice question (with answers).
===Question
What is the frequency ratio (\(\psi\)) when the supply frequency is adjusted to \(40 \, \text{Hz}\) and the standard frequency is \(50 \, \text{Hz}\)?
===Choices
\(\psi = 78\%\)
\(\psi = 70\%\)
\(\psi = 80\%\)
\(\psi = 87.5\%\)
\(\psi = 85\%\)
\(\... | \(\psi = 80\%\) | general_qa | 163 |
The following is a multiple choice question (with answers).
===Question
We now define an algorithm: The definition of a(n) is the sequence which is the inverse of the 6th cyclotomic polynomial. This is a periodic sequence with period 6. Given the input x_list (a series of values): [92, 93, 94, 95, 96, 97, 98, 99, 100, ... | [0, -1, -1, 0, 1, 1, 0, -1, -1, 0] | general_qa | 417 |
The following is a multiple choice question (with answers).
===Question
The superfamily Nematocarcinoidea is part of what infraorder?
===Choices
Penaeidea
Carideaidea
Caridea
Atyidea
Palaemonidea
Nematocarcinidea
Pandalidea
Carideidea
Gonodactyloidea
Stenopodidea | Caridea | general_qa | 81 |
The following is a multiple choice question (with answers).
===Question
The pharmacological basis of using bitter orange (Zhishi) to treat gastrointestinal atonic dyspepsia is what?
===Choices
Bidirectional regulatory effect on the gastrointestinal system
Inhibitory effect on the gastrointestinal system
Stimulatory ef... | Excitatory effect on the gastrointestinal system | general_qa | 139 |
The following is a multiple choice question (with answers).
===Question
Day light factor in living rooms should be:
===Choices
7.5%
7.8%
6%
7.9%
7%
8.2%
8%
12%
9%
10% | 8% | general_qa | 56 |
The following is a multiple choice question (with answers).
===Question
The mass of a red blood cell is about 33 pg (where 1 $\mathrm{p g}=1 0^{-1 2} \mathrm{g}$,and it contains typically $3 \times1 0^{8}$ haemoglobin molecules. Each haemoglobin molecule is a tetramer of myoglobin (see preceding exercise). What fractio... | $$
0 .9 7
$$ | general_qa | 204 |
The following is a multiple choice question (with answers).
===Question
When does the highest Leaf Area Index in rice populations generally occur?
===Choices
Before the tillering phase.
After the germination phase.
At the seedling growth period.
During the seed development time.
During the booting stage.
During the ma... | During the booting stage. | general_qa | 89 |
The following is a multiple choice question (with answers).
===Question
One of the important tasks of kindergarten is ().
===Choices
To counsel parents on personal relationships
To manage parents' daily routines efficiently
To promote the healthy physical and mental development of parents
To meet the parents' personal... | To provide convenient conditions for parents to participate in work and study | general_qa | 117 |
The following is a multiple choice question (with answers).
===Question
A fault belongs to which type of boundary condition?
===Choices
fifth
first
seventh
tenth
eighth
third
second
fourth
ninth
sixth | second | general_qa | 53 |
The following is a multiple choice question (with answers).
===Question
Under Chinese law,To fraudulently obtain insurance money, A first took out a personal accident insurance policy for his mother, then later killed her and staged an accidental injury scene to claim a large sum of insurance money. A's actions should ... | Punished for both insurance fraud and intentional homicide | general_qa | 167 |
The following is a multiple choice question (with answers).
===Question
If the standard electrode potential for a cell is 2 V at 300 K, the equilibrium constant (K) for the reaction
$Zn(s)+{ Cu }^{ 2 }(aq)\rightleftharpoons { Zn }^{ 2 }(aq)+Cu(s)$ at 300 K is approximentely
$$(R=8\quad JK^{ -1 }{ mol }^{ -1 },F=96000\... | $${ e }^{ 160 }$$ | general_qa | 247 |
The following is a multiple choice question (with answers).
===Question
For a particle moving in the $x-y$ plane, the $x$ and $y$ coordinates are changing as $ x=a\, \sin\,\omega t$ and $y=a (1-\cos\, \omega t)$, where $'a'$ and $\omega$ are constants. Then, what can be inferred for the trajectory of the particle?
===... | The trajectory is such that distance moved by the particle is directly proportional to time. | general_qa | 264 |
The following is a multiple choice question (with answers).
===Question
The net weight of a radioactive element with a half-life of 10 days is 8 g, and after 40 days its net weight will be ( ).
===Choices
0.25g
3g
6g
1.5g
2.5g
2g
1g
5g
0.5g
4g | 1g | general_qa | 89 |
The following is a multiple choice question (with answers).
===Question
"June to September is the winter season in the southern hemisphere, and the temperature over Antarctica is very low, forming polar stratospheric clouds. Polar stratospheric clouds accumulate a large amount of chlorine and bromine containing substan... | This statement is incorrect. From June to September, Antarctica lacks sunlight, which is necessary to destroy ozone. Therefore, the ozone hole is most severe during the Antarctic spring, from September to November. | general_qa | 395 |
The following is a multiple choice question (with answers).
===Question
The piston is taken completely out of the cylinder. The hole at the top is sealed. A water tank is brought below the cylinder and put in a position, so that the water surface in the tank is at the same level as the top of the cylinder as shown in t... | $$\rho g(L_0-H)^2+P_0(L_0-H)-L_0P_0=0$$ | general_qa | 356 |
The following is a multiple choice question (with answers).
===Question
Which phenomenon occurs when the river's sediment load exceeds its transport capacity?
===Choices
Evaporation
Filtration
Sedimentation
Deposition
Conglomeration
Insolation
Erosion
Oxidation
Stratification
Aggradation | Sedimentation | general_qa | 69 |
The following is a multiple choice question (with answers).
===Question
Losses incurred by an enterprise in a tax year may be carried forward to subsequent years and offset by income from subsequent years, but the maximum carry-forward period shall not exceed ( ) years.
===Choices
25
45
10
35
50
30
15
40
20
5 | 5 | general_qa | 83 |
The following is a multiple choice question (with answers).
===Question
We now define an algorithm: The definition of a(n) is the triangle of the number of rooted trees with \\( n \\ge 2 \\) nodes and a given height \\( h \\ge 1 \\), formatted such that the entry T(n, h) represents the number of rooted trees with exact... | [55, 509, 1198, 1323, 941, 487, 188, 53, 10, 1] | general_qa | 620 |
The following is a multiple choice question (with answers).
===Question
Persistent stomach pain not resolved over time, symptoms include dark purple blood in stool, even black in severe cases, vague abdominal pain relieved by warm drinks, loose stools, sallow complexion, fatigue, reluctance to speak, pale tongue with a... | Huangtu Decoction | general_qa | 171 |
The following is a multiple choice question (with answers).
===Question
A sensor produces a voltage signal (almost no current can be provided), after amplification, it is hoped that the output voltage is proportional to the signal, then the amplifier circuit should be selected ().
===Choices
Current-series Negative Fe... | Series Negative Feedback Voltage | general_qa | 113 |
The following is a multiple choice question (with answers).
===Question
Please select suitable circuits to form a two-stage amplifier circuit based on the following requirements: the voltage gain should be greater than 10, the input resistance should be greater than 10MΩ, and the output resistance should be less than 1... | Common-source circuit; Common-collector circuit | general_qa | 176 |
The following is a multiple choice question (with answers).
===Question
Who was the first person to write a food column 'Food Notes' in the Hong Kong press?
===Choices
Chen Mengyin (1920-1985)
Chen Mengyuan
Chen Mengyin (1920-1990)
Chen Mengyan
Chen Mengyin (1920-1960)
Chen Mengyin (1920-1970)
Chen Mengyin (1920-1975)... | Chen Mengyin | general_qa | 155 |
The following is a multiple choice question (with answers).
===Question
Which of the following options is correct for a distillation column in operation where the selected reflux ratio is less than the minimum reflux ratio?
===Choices
xd, xw both decreased
xd increase, xw reduction
Operation not possible
xd unchanged,... | xd reduction, xw increase | general_qa | 82 |
The following is a multiple choice question (with answers).
===Question
To ensure a steel rod is always $5 \, \mathrm{cm}$ longer than a copper rod at any temperature, what are their lengths $l_{01}$ and $l_{02}$ at $0 \, \mathbb{°C}$ ?
( It is known that the linear expansion coefficients for the steel rod and the copp... | $$
\, 2 0 \, \ \mathrm{c m} ,1 5 \, \ \mathrm{c m}
$$ | general_qa | 476 |
The following is a multiple choice question (with answers).
===Question
On what day, month, and year did Ghulam Nabi Wani Sogami (an Indian politician from Jammu and Kashmir) die?
===Choices
23 July 1981
23 July 1987
23 July 1986
23 July 1984
23 July 1982
23 July 1979
23 July 1985
23 July 1980
23 July 1983
23 July 198... | 23 July 1981 | general_qa | 137 |
The following is a multiple choice question (with answers).
===Question
In year N, the 300th day of the year is a Tuesday. In year N + 1, the 200th day is also a Tuesday. Suppose Monday is the 1-th day of the week, on which day of the week did the 100th day of the year N - 1 occur? Return a numeric between 1 and 7.
==... | 4 | general_qa | 139 |
The following is a multiple choice question (with answers).
===Question
On Encrypting "cryptography" using Vignere Cipher System using the keyword "LUCKY" we get cipher text ____.
===Choices
nlaaeilcjiij
nlaaeiflkkji
nlaheijbljii
nlaceijcljji
olaaeiibljki
nlazeiibljji
nlaceiibljji
nlazeiibljii
nlaeeiblbjjj
mlaaeibljki | nlazeiibljji | general_qa | 117 |
The following is a multiple choice question (with answers).
===Question
What is the average depth of Manasbal Lake in meters and feet?
===Choices
4.5 m (14.6 ft)
4.5 m (14.8 ft)
4.5 m (14.7 ft)
4.5 m (15.2 ft)
4.5 m (15 ft)
4.5 m (15.1 ft)
4.5 m (15.3 ft)
4.5 m (14.5 ft)
4.5 m (14.9 ft)
4.5 m (14.4 ft) | 4.5 m (15 ft) | general_qa | 140 |
The following is a multiple choice question (with answers).
===Question
A horizontally layered medium model has an interface $R$. The velocity of the upper medium above the interface is $2500 m/s$ , and its density is $2000 kg/m^3$. The velocity of the lower medium below the interface is $4000 m/s$ and its density is $... | \frac{1}{3} | general_qa | 182 |
The following is a multiple choice question (with answers).
===Question
Regarding the monotonicity of the function \( y = x - \ln \left( {1 + x} \right) \), which of the following statements is correct?
===Choices
It is monotonically increasing on \( \left( {0, + \infty}
ight) \)
It is monotonically increasing on \( ... | It is monotonically decreasing on \( \left( { - 1,0} \right) \) | general_qa | 301 |
The following is a multiple choice question (with answers).
===Question
Oxygen initially at 13.8MPa, 15.5°C is throttled in a steady- flow process to a final pressure of 1.38MPa. Assuming the process to be adiabatic, determine the final temperature of oxygen.
===Choices
-5°C
-25°C
-15°C
-20°C
-10°C
-13.71°C
-30°C
-18°... | -13.71°C | general_qa | 124 |
The following is a multiple choice question (with answers).
===Question
A 37-year-old male with a known history of chronic hepatitis presented for imaging evaluation. Ultrasonographic examination demonstrated marked splenomegaly with hepatic parenchymal heterogeneity and surface nodularity, consistent with cirrhotic ch... | Cirrhosis with liver tumor | general_qa | 207 |
The following is a multiple choice question (with answers).
===Question
Set the inner diameter of the hollow circular shaft to $d$, the outer diameter to $D$, with $d/D = a$, what are the expressions for its polar moment of inertia $I_p$ and torsional section modulus $W_p$?
===Choices
$I_p = \frac{1}{32} \pi D^4 (a^4 ... | $I_p = \frac{1}{32} \pi D^4 (1 - a^4)$,$W_p = \frac{1}{16} \pi D^3 (1 - a^4)$ | general_qa | 547 |
The following is a multiple choice question (with answers).
===Question
Two identical balls A and B each of mass 0.1 kg are attached to two identical mass less springs.This spring mass system is constrained to move inside a rigid smooth pipe in the form of a circle as in fig .The pipe is fixed in a horizontal plane. Th... | $\displaystyle{f=\frac{1}{\pi}}$; $ {E=4\pi^{2}\times10^{-5}}J$; ${v=2\pi\times10^{-2}}m/s$ | general_qa | 659 |
The following is a multiple choice question (with answers).
===Question
Which of the following criticisms of standard ("plain vanilla") GARCH models can be overcome by EGARCH models?
i) Estimated coefficient values from GARCH models may be negative
ii) GARCH models cannot account for leverage effects
iii) The responsiv... | (i), (ii), and (iii) only | general_qa | 193 |
The following is a multiple choice question (with answers).
===Question
In which case the $\sigma$-bond pair and $\pi $-bond pair of electrons both are attracted in the same direction (towards same atom)
===Choices
$$H_2C = CH - CH_3$$
$$H_2C = CH - OH$$
$$H_2C = CH - Cl$$
$$H_2C = CH - Br$$
$$H_2C = CH - I$$
$$CH_3 -... | $$H_2C = CH - Cl$$ | general_qa | 170 |
The following is a multiple choice question (with answers).
===Question
How is the flashover voltage defined in a high voltage test?
===Choices
The voltage at which copper wires start to heat excessively.
The voltage at which an arc discharge occurs on the surface of an insulator.
The voltage at which a spark happens ... | The voltage at which an arc discharge occurs on the surface of an insulator. | general_qa | 148 |
The following is a multiple choice question (with answers).
===Question
Babloo a 4 year male presents with history of seizures. On examination there is hypopigmented patches on face & mental retardation. Most probable diagnosis is:
===Choices
Tuberous sclerosis with atlantoaxial subluxation
Neurofibromatosis
Tuberous ... | Tuberous sclerosis | general_qa | 151 |
The following is a multiple choice question (with answers).
===Question
A company is interested in comparing the mean sales revenue per salesperson at two different locations. The manager takes a random sample of 10 salespeople from each location independently and records the sales revenue generated by each person duri... | The population of the sales records at each location is normally distributed. | general_qa | 219 |
The following is a multiple choice question (with answers).
===Question
The representative work of () is "On the Language of Writing."
===Choices
Sun Boxiang
Bao Shichen
Zhao Zhiqian
Qi Baishi
Wu Changshuo
Fan Kuan
Dong Qichang
Tang Bohu
Zhang Daqian
Xu Beihong | Sun Boxiang | general_qa | 82 |
The following is a multiple choice question (with answers).
===Question
When inputs
$$
\overline{{{{I_{0}}}}} \sim\overline{{{{I_{7}}}}}
$$
of the 74LS148 are entered in sequence 11011101, output
$$
\overline{{{Y_{2}}}} \sim\overline{{{Y_{0}}}}
$$
is ( ).
===Choices
010
110
111
101
000
100
001
011 | 001 | general_qa | 130 |
The following is a multiple choice question (with answers).
===Question
The contract price for a certain project is 15 million yuan, with a construction period of 312 days. The advance payment for the project is 25% of the contract price. The proportion of major materials and equipment is 60%. Therefore, the threshold ... | 875 | general_qa | 126 |
The following is a multiple choice question (with answers).
===Question
What is the primary method used to detect exoplanets around distant stars?
===Choices
Cosmic microwave background study
Magnetic field mapping
Ultraviolet spectrum analysis
Astrometric measurements
Solar flare monitoring effect
Infrared observatio... | Radial velocity (Doppler) method | general_qa | 95 |
The following is a multiple choice question (with answers).
===Question
Acetyl-CoA ___ the activity of pyruvate dehydrogenase.
===Choices
Pause
Block
Decrease
Conserve
Limit
Suppress
Enhance
Promote
Halt
Activate | Suppress | general_qa | 58 |
The following is a multiple choice question (with answers).
===Question
An $\alpha$ particle (mass $0.67 \times 10^{-26} \, \mathrm{kg}$) enters a concrete protective wall at a speed of 0.8c ($c$ is the speed of light in a vacuum). The wall is 0.35m thick, and the speed of the particle decreases to $5c/13$ when it exit... | $$
2ns
$$ | general_qa | 195 |
The following is a multiple choice question (with answers).
===Question
An Anganwadi worker works as a cadre for which of the following programme?
===Choices
ICDS
NRHM
RNTCP
IMNCI
RCH | ICDS | general_qa | 50 |
The following is a multiple choice question (with answers).
===Question
For a particular reaction at equilibrium $\Delta H^{o}=-38.3\ KJ$ and $\Delta S^{o}=-113\ JK^{-1}$. This reaction is
===Choices
spontaneous at all temperature above $339\ K$
spontaneous at all temperature above 338 K
non-spontaneous at all tempera... | spontaneous at all temperature | general_qa | 184 |
The following is a multiple choice question (with answers).
===Question
Considering a particle system composed of an extremely large number of three-dimensional translational particles moving within a cubic container with side length $a$, the relationship between the system's volume, particle mass, and temperature is g... | 1.84 | general_qa | 219 |
The following is a multiple choice question (with answers).
===Question
What are the causes of localized lymphadenopathy?
===Choices
Chronic autoimmune diseases, node aggregation disorder, lymphatic tissue obstruction.
Acute inflammation, non-malignant nodules, targeted lymph node treatment.
Bacterial infection, cervi... | Non-specific lymphadenitis, lymph node tuberculosis, malignant tumor lymph node metastasis. | general_qa | 172 |
The following is a multiple choice question (with answers).
===Question
Consider a process of continuously flipping a coin. Let $Y_n$ denote the number of heads that have appeared by the $n$-th flip. Find the one-step transition probabilities of the sequence $\{Y_{n}, n \geq 0\}$ is ().
===Choices
$$ p_{i j}=\left\{\b... | $$
p_{i j}=\left\{\begin{cases} {{{{\frac{1} {2}},}}} & {{{j=i}}} \\ {{{{\frac{1} {2}},}}} & {{{j=i+1}}} \\ {{{0}}} & {{{others}}} \\ \end{cases} \right.
$$ | general_qa | 706 |
The following is a multiple choice question (with answers).
===Question
Take a standard rock specimen with a diameter of 50mm and a length of 70mm, and conduct a radial point load strength test. The measured ultimate load at failure is 4000N, and at the moment of failure, there was no penetration at the loading point. ... | Harder rock | general_qa | 132 |
The following is a multiple choice question (with answers).
===Question
There are three layers of soil distributed horizontally on the permeable rock foundation with a thickness of 1m. The permeability coefficients are k1 = 1m/d, k2 = 2m/d, and k3 = 10m/d respectively. What is the equivalent soil permeability coefficie... | 4.33m/d | general_qa | 149 |
The following is a multiple choice question (with answers).
===Question
Female, 22 years old. Gradual decrease in menstrual flow for 2 years, amenorrhea for 6 months. Unmarried, first menstruation at 16 years of age, with more regular menstrual cycles thereafter. Basal body temperature shows a biphasic curve. The disea... | endometrial tuberculosis | general_qa | 141 |
The following is a multiple choice question (with answers).
===Question
What is the reason why the transformer adopts "equivalent circuit" instead of T-equivalent circuit in power flow calculation?
===Choices
Employing a π-type equivalent circuit lowers the accuracy of transformer turn ratio adjustments.
Using a π-typ... | Adopting a T-type equivalent circuit can reduce the total number of nodes in the power system. | general_qa | 186 |
The following is a multiple choice question (with answers).
===Question
For the following exercises, find the polar equation of the conic with focus
at the origin and the given eccentricity and directrix.
Directrix: \(x=-\frac{1}{4} ; \quad e=\frac{7}{2}\)
===Choices
r = \frac{7/8}{1 + (7/2)\cos\theta}
r = \frac{7/8}{... | r = \frac{7/8}{1 - (7/2)\cos\theta} | general_qa | 270 |
The following is a multiple choice question (with answers).
===Question
In which era was the idea of city planning first formed in ancient China?
===Choices
Tang Dynasty
Qin Dynasty
Song Dynasty
Han Dynasty
Zhou Dynasty
Warring States Period
The period of North and South Dynasties
Ming Dynasty
Xia Dynasty
Shang Dynast... | Shang Dynasty | general_qa | 76 |
The following is a multiple choice question (with answers).
===Question
The spring block system lies on a smooth horizontal surface. the free end of the spring is being pulled towards right with constant speed $v_o = 2 $ m/s. At $t = 0$ sec, the spring of constant $T=400$ N/cm is unstretched and the block has a speed $... | $2 cm$ | general_qa | 146 |
The following is a multiple choice question (with answers).
===Question
Imagine you had a set of weights {62, 93, 26, 52, 166, 48, 91, and 141}. What is the subset that sumis to $\mathsf{V}=$ 302?
===Choices
{93, 52, 141, 26}
{91, 52, 141, 18}
{62,26,166,48}
{62, 48, 166,52}
{91, 62, 52, 93}
{93, 26, 91,48}
{141, 26, ... | {62,26,166,48} | general_qa | 241 |
The following is a multiple choice question (with answers).
===Question
According to China's Law, Zhang and Wang signed a goods sales contract, with Zhang as the seller residing in City A and Wang as the buyer residing in City B. There was no agreement on the place of performance, and it cannot be determined through cu... | Delivery of money should be made in City A, and delivery of goods should be made in City B. | general_qa | 259 |
The following is a multiple choice question (with answers).
===Question
A string of length L, fixed at its both ends is vibrating in its first overtone mode. Consider two elements of the spring of the same small length at positions ${\ell _1} = 0.2\;{\text{and}}\;{\ell _2} = 0.45{\text{L}}$ from one end. If ${K_1}\;{\t... | $${K_1} = {K_2}$$ | general_qa | 258 |
The following is a multiple choice question (with answers).
===Question
Let $S$ denote the value of the sum
$$$\sum^{668}_{n=0} (-1)^n {2004 \choose 3n}$$$
Determine the remainder obtained when $S$ is divided by $1000$ .
===Choices
98
104
94
96
102
106
6
108 | 6 | general_qa | 102 |
The following is a multiple choice question (with answers).
===Question
Structure forms of personality profiles mainly include:
I. Vertical Style
II. Composite Style
III. Inverted Pyramid Style
IV. Event-Centered Character Style
V. Issue Research Style
===Choices
I,II,V
I,II,III,IV
I,III,V
I,II,III
III,IV,V
II,III,V
I... | I,II,III,IV | general_qa | 111 |
The following is a multiple choice question (with answers).
===Question
What did the emergence of tabloid newspapers signify?
===Choices
the rise of cable television news
the decline of print journalism
the advent of blog-style news
the emergence of opinion blogs
the start of online journalism
the birth of unofficial ... | the birth of unofficial newspapers | general_qa | 91 |
The following is a multiple choice question (with answers).
===Question
The steps for block construction technology are ().
===Choices
Lay mortar → Hoist blocks into position → Align → Grout → Install bricks
Align blocks → Lay bricks → Position mortar → Grout → Install beams
Align → Hoist mortar into position → Lay → ... | Lay mortar → Hoist blocks into position → Align → Grout → Install bricks | general_qa | 195 |
The following is a multiple choice question (with answers).
===Question
To have a successful testimony, take good notes, write a report, and ________.
===Choices
Ignore the guidelines.
Alter the story.
Follow the lead.
Deflect inquiries.
Promote a narrative.
Express insights.
Disguise emotions.
Tell the truth.
Skew pe... | Tell the truth. | general_qa | 77 |
The following is a multiple choice question (with answers).
===Question
If the real space volume is $\mathsf{V}$, then the volume of each mode in $\mathsf{K}$ space is $\Delta k_{m} \Delta k_{n} \Delta k_{q} = (2 \pi)^{3} / (8 V)$. Since $k = 2 \pi v / c \geq 0$ and each oscillation mode can have 2 mutually perpendicul... | $$
\frac{8 V} {\left( 2 \pi\right)^{3}}
$$
$$
\frac{8 \pi v^{3}} {3 c^{3}} V
$$
$$
\frac{8 \pi v^{2}} {c^{3}}
$$ | general_qa | 801 |
The following is a multiple choice question (with answers).
===Question
Now the mainstream storage system generally uses the relational database, which belong to the main advantages of the relational database?
I.can maintain data consistency in transaction processing
II.fast read and write and low cost
III.low cost of ... | Only I, III and IV | general_qa | 116 |
The following is a multiple choice question (with answers).
===Question
If the distribution of $Y$ is $b(n, 0.25)$, give a lower bound for $P(|Y / n-0.25|<0.05)$ when
(a) $n=100$.
===Choices
$0.55$
$0.85$
$0.15$
$0.65$
$0.35$
$0.10$
$0.05$
$0.75$
$0.45$
$0.25$ | $0.25$ | general_qa | 131 |
The following is a multiple choice question (with answers).
===Question
A researcher notices that the frequency of a note emitted by an automobile horn appears to drop from 284 cycles \bullet s^-1 to 266 cycles \bullet s^-1 as the automobile passes him. From this observation he is able to calculate the speed of the car... | 24.5 mph | general_qa | 149 |
The following is a multiple choice question (with answers).
===Question
How many distinct irreducible monic factors divide
$$
f=x^{5}+2 x^{4}+x^{3}+x^{2}+2 \quad \text { in } \mathbb{F}_{3}[x] \text { ? }
$$
===Choices
6
4
1
8
2
7
3
9
5
10 | 2 | general_qa | 96 |
The following is a multiple choice question (with answers).
===Question
A graph is plot between $P$ (in $W$) vs $x^{2}$, where $P$=power and $x$=displacement of particle moving rectilinearly mass of the particle is $1\ kg$ and its speed at $x=0$ is $1\ m/s$. Choose correct options.
===Choices
speed of particle at \( x... | speed of particle at $x=2m$ is $(15)^{1/3}m/s$ | general_qa | 299 |
The following is a multiple choice question (with answers).
===Question
0.5000g of phosphate ore sample underwent dissolution, oxidation, and other chemical treatments, during which $\mathrm{P O_{4}^{3-}}$ was precipitated as $\mathrm{MgNH_{4}PO_{4}\cdot 6H_{2}O}$ and then calcined at high temperature to form $\mathbf{... | $$
25.74 \%
$$ | general_qa | 259 |
The following is a multiple choice question (with answers).
===Question
There is a discrete linear time-invariant system, with difference equation $y(n) - 0.6y(n-1) - 2.8y(n-2) = x(n-1)$, then the system function $H(z)$ of this system is ( ).
===Choices
$$\frac{z} {( z-2 ) ( z+2.4 )}$$
$$\frac{z} {( z-2.4 ) ( z+1 )}$$... | $$\frac{z} {( z-2 ) ( z+1. 4 )}$$ | general_qa | 293 |
The following is a multiple choice question (with answers).
===Question
Chemical analysis is (), and most instrumental analyses are relative quantitative methods.
===Choices
Relative Quantitation Method
Absolute Evaluation Procedure
Relative Measurement Technique
Differential Quantitation Process
Absolute Quantitation... | Absolute Quantitation Method | general_qa | 79 |
The following is a multiple choice question (with answers).
===Question
Congress has recently enacted a statute requiring all males between the ages of 18 and 30 to take a physical examination each year. The results of the exam are sent to a government data information center for the purpose of keeping information abou... | To raise and support an army and navy. | general_qa | 204 |
The following is a multiple choice question (with answers).
===Question
What is the correct description of cervical spondylosis?
===Choices
Thoracic Spine and Chest Pain
Neck and Headache Issues
Back and Spine Radiating Pain
Neck and Jaw Clenching Issues
Hand and Finger Tingling
Neck and Shoulder Radiating Pain
Lower ... | Upper Limb and Hand Numbness | general_qa | 108 |
The following is a multiple choice question (with answers).
===Question
Adapalene is prepared from 1-adamantanol and what other raw material, then the new compound is obtained after being catalyzed by concentrated sulfuric acid?
===Choices
4-bromobenzaldehyde (p-bromobenzaldehyde)
4-bromophenol (p-bromophenol)
4-bromo... | 4-bromophenol (p-bromophenol) | general_qa | 199 |
The following is a multiple choice question (with answers).
===Question
If observing cytoplasmic streaming using the epidermal cells of onion scale leaves at the early budding stage, which epidermal cells of the scale leaves are easier to observe?
===Choices
Close to the root
Near the center
The outermost
The innermos... | Near the center | general_qa | 102 |
The following is a multiple choice question (with answers).
===Question
Most important measure to prevent hospital infection -
===Choices
Use of antiviral agents
Wearing personal protective equipment (PPE)
Formalin fumigation
Thorough hand sanitation
Use of antibiotics
Regular surface disinfection
Frequent patient iso... | Proper hand washing | general_qa | 83 |
The following is a multiple choice question (with answers).
===Question
On the asphalt road, there is a 2mm layer of standing water with a temperature of 20°C, above which lies a 0.2mm thick layer of still air. The water diffuses through this air layer into the atmosphere. The partial pressure of water vapor in the atm... | 0.58h | general_qa | 165 |
The following is a multiple choice question (with answers).
===Question
In theater performances, what is a character's self-talk when they are alone on stage?
===Choices
Interaction
Interpretation
Manifesto
Exposition
Recitative
Soliloquy
Monologue
Revelation
Narration
Dialogue | Monologue | general_qa | 66 |
The following is a multiple choice question (with answers).
===Question
The commonly used methods for concentrating fruit and vegetable juice include vacuum concentration, concentration, _______, and reverse osmosis concentration
===Choices
sedimentation
distillation
freezing
dilution
infusion
crystallization
boiling
... | freezing | general_qa | 74 |
The following is a multiple choice question (with answers).
===Question
It is known that the defect rate of a certain product is 0.01. Now, suppose 100 items are randomly selected for inspection. Let $A$ represent "approximately 2 defective products are found among the selected items." What is the probability of $A$? W... | 0.432 | general_qa | 170 |
The following is a multiple choice question (with answers).
===Question
The K-class blimp (1938), the K-14, had a total diameter of what in meters?
===Choices
17.66 m
17.62 m
17.60 m
17.65 m
17.33 m
17.69 m
17.36 m
17.63 m
17.64 m
17.61 m | 17.63 m | general_qa | 112 |
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