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
In a certain steam power plant, for every $1 MW$ of energy added to the boiler, $0.58 MW$ of energy must be discharged from the condenser, while the water pump consumes $0.02 MW$ of work. Determine the turbine's output power and the thermal efficie... | $$
0.44 \mathrm{MW}
$$
$$
0. 4 2
$$ | general_qa | 323 |
The following is a multiple choice question (with answers).
===Question
During the existence of a marriage, if a party files a claim for damages under Article 46 of the Marriage Law without filing for divorce, the People's Court ( )
===Choices
shall not accept the case unless the claim is filed with a divorce petition... | shall not accept the case | general_qa | 144 |
The following is a multiple choice question (with answers).
===Question
Two identical semicircular discs of mass 'm' each and radius 'R" are placed in the XY (horizontal) plane and the YZ (vertical) plane, respectively. They are so placed that they have their common diameter along the Y-axis. Then the moment of inertia... | $$I_Z = \dfrac{3}{4}mR^2$$ | general_qa | 271 |
The following is a multiple choice question (with answers).
===Question
Let $a, b$ be positive integers such that
$$$\gcd(2019!, 2020!, a, b) \cdot \text{lcm}(2019!, 2020!, a, b) =\sqrt{ab \cdot 2019! \cdot 2020!}.$$$
Find the minimum possible value of $a+b.$
===Choices
129
122
128
121
123
127
126
125
120
124 | 121 | general_qa | 145 |
The following is a multiple choice question (with answers).
===Question
A spherical cell has radius $R$. The flur density through the surface is given by $j_{s}=-D$ grad $C$. Suppose that the substance in question has concentration $C ( t )$ inside the cell and zero outside. The material outside is removed fast enough ... | $$
- \frac{3 D} {R \Delta r} C
$$ | general_qa | 317 |
The following is a multiple choice question (with answers).
===Question
Embryonic hematopoiesis is at its peak during ____.
===Choices
Embryonic 1st to 5th day
Embryonic 8th to 9th month
Embryonic 7th to 8th month
Embryonic 1st to 2nd month
Embryonic 9th to 10th month
Embryonic 3rd to 4th month
Embryonic 4th to 5th mo... | Embryonic 4th to 5th month | general_qa | 151 |
The following is a multiple choice question (with answers).
===Question
If $A,B,C$ are three random events, and $A$ is independent of $C$, $B$ is independent of $C$, then the sufficient and necessary condition for $A \cup B$ to be independent of $C$ is ( )
===Choices
$A \cap B$ is mutually exclusive with $C$
$A \cup B... | $AB$ is independent of $C$ | general_qa | 190 |
The following is a multiple choice question (with answers).
===Question
What is the de Broglie wavelength of a radium alpha particle (a helium nucleus,He^2+) having an energy of 4.8MeV(million electron volts)?
===Choices
8.4 × 10^-14 cm
6.6 × 10^-13 cm
1.0 × 10^-14 cm
6.6 × 10^-27 cm
1.0 × 10^-28 cm
3.2 × 10^-15 cm
2.... | Both 6.6 × 10^-13 cm and 6.6 × 10^-13 m are correct | general_qa | 191 |
The following is a multiple choice question (with answers).
===Question
What month, day, and year did Amir Hamza put a $2.2 million fatwā on anyone who killed Pastor Terry Jones?
===Choices
March 22, 2018
March 22, 2017
March 22, 2015
March 22, 2010
March 22, 2012
March 22, 2011
March 22, 2016
March 22, 2009
March 22,... | March 22, 2011 | general_qa | 155 |
The following is a multiple choice question (with answers).
===Question
The main feature of lightweight abutments in arch bridges is that they use what to balance external forces to maintain their stability?
===Choices
Pillar tension equilibrium and material elasticity
Vehicle load weight
Arch gravitational distributi... | Soil lateral pressure and material strength | general_qa | 108 |
The following is a multiple choice question (with answers).
===Question
Light of wavelengths $\lambda_1= 4500\mathring{A}$, $\lambda_2= 6000\mathring{A}$ are sent through a double still arrange simultaneously then
===Choices
The fourth bright fringes of $\lambda_1$ will coincide with the third bright fringe of $\lambd... | No interference pattern will be formed | general_qa | 293 |
The following is a multiple choice question (with answers).
===Question
Most undesirable metal in drinking water is:
===Choices
Mercury
Iron
Cadmium
Zinc
Copper
Arsenic
Lead
Aluminum | Lead | general_qa | 47 |
The following is a multiple choice question (with answers).
===Question
Marx's theory of "how capital accumulated by labor in turn oppresses labor" is _____.
===Choices
theory of the working class
dialectical materialism framework
theory of capitalist labor cycles
capital oppression cycle theory
alienation theory of l... | alienation theory of labor accumulation | general_qa | 100 |
The following is a multiple choice question (with answers).
===Question
A glass capillary tube of inner diameter $0.28mm$ is lowered vertically into water in a vessel.The pressure to be applied on the water in the capillary tube so that water level in the tube is same as the vessel in $N /m ^{2}$ is(surface tension of ... | $$10^{3}$$ | general_qa | 238 |
The following is a multiple choice question (with answers).
===Question
A 10-month-old girl is brought to the physician because of a 4-day history of irritability and a rash. Her temperature is 37.7°C (99.9°F). Examination of the skin shows flaccid, transparent blisters and brown crusts on her chest and upper extremiti... | Exfoliative toxin A release | general_qa | 180 |
The following is a multiple choice question (with answers).
===Question
The X-ray characteristics of the cavities formed by peripheral lung cancer are ().
===Choices
Thin wall, eccentricity, smooth outer wall surface, noticeable fluid level
Thin wall, uniformity, irregular outer wall surface, ambiguous fluid level
Thi... | Thick wall, eccentricity, uneven inner wall surface, no obvious fluid level | general_qa | 186 |
The following is a multiple choice question (with answers).
===Question
How old was Clint Ballard Jr. when he attended a musical program for gifted students at the University of North Texas?
===Choices
10 years.
12 years.
17 years.
16 years.
8 years.
14 years.
15 years.
9 years.
13 years.
11 years. | 11 years. | general_qa | 78 |
The following is a multiple choice question (with answers).
===Question
The value of ${ log }_{ 10 }$K for a reaction $A\leftrightharpoons B$ is ::
(Given-${ \Delta }_{ r }{ H }^{ \circ }_{ 298\quad K }=-54.07KJ\quad mol^{ -1 }$, ${ \Delta }_{ r }{ S }^{ \circ }_{ 298\quad K }=10KJ^{ -1 }\quad mol^{ -1 }$ and $R=8.... | 5 | general_qa | 200 |
The following is a multiple choice question (with answers).
===Question
What are some of the measures of absolute effects in epidemiology?
===Choices
OR, discrepancy in etiological risk, average disease-free time difference in etiology
Disparities in morbidity levels, disparities in causative factors, disparities in r... | Differences in morbidity rate, differences in risk of etiology, differences in average disease-free time | general_qa | 201 |
The following is a multiple choice question (with answers).
===Question
The site of a certain highway bridge is located in a seismic intensity zone of 9 degrees, composed of medium sand with approximately zero clay content, and a groundwater depth of 1 meter. During a standard penetration test conducted at $4 \mathrm{m... | 2/3 | general_qa | 137 |
The following is a multiple choice question (with answers).
===Question
What are 18th century German opera songs?
===Choices
The Nuremberg Music Festivals
The Leipzig Symphony Works
The Dresden Chamber Songs
The Stuttgart Theater Productions
The Caibizi Opera and the Vienna Opera
The Hamburg Opera and the Munich Opera... | The Caibizi Opera and the Vienna Opera | general_qa | 98 |
The following is a multiple choice question (with answers).
===Question
What part of the rose family develops into an apple?
===Choices
Enlarged stem tissue surrounding the seed, drupe.
Floral hypanthium encasing a simple ovary, drupe.
A single pistil positioned below the ovary, pome fruit.
Receptacle developing into ... | Inferior ovary beneath the flower receptacle, pome. | general_qa | 159 |
The following is a multiple choice question (with answers).
===Question
Why did the local planning department choose Shahu Village as a test site for land preparation?
===Choices
The local government identified Shahu Village due to resource availability.
The financial incentives in Shahu Village attracted significant ... | The local leaders of Shahu Village have the expertise and determination to redevelop. | general_qa | 158 |
The following is a multiple choice question (with answers).
===Question
Changes in respiratory rhythm due to decreased excitability of the respiratory center include ______ and ______.
===Choices
Sudden respiratory arrest, irregular gasps
Smooth diaphragmatic movement, erratic breath sounds
Frequent yawning, excessive... | Cheyne-Stokes respiration, apneustic breathing | general_qa | 133 |
The following is a multiple choice question (with answers).
===Question
The patient experienced a 3-month absence of menstruation, followed by 20 days of vaginal bleeding after which dilation and curettage was performed twice. Post-surgery, the patient had intermittent vaginal bleeding for over 20 days and suddenly exp... | Invasive Mole Uterine Perforation | general_qa | 225 |
The following is a multiple choice question (with answers).
===Question
The Rules of Conduct of the AICP Code include the following:
I. We shall not, as public officials or employees, accept from anyone other than our public employer any compensation, commission, rebate, or other advantage that may be perceived as rela... | I, IV | general_qa | 185 |
The following is a multiple choice question (with answers).
===Question
The relationship introduced in Problem $1-48$ has been interpreted to mean that a particle of mass $m\left(E=m c^2\right)$ can materialize from nothing provided that it returns to nothing within a time $\Delta t \leq h / m c^2$. Particles that last... | 2.9$10^{-23} \mathrm{~s}$ | general_qa | 299 |
The following is a multiple choice question (with answers).
===Question
Let $T_n$ be defined by
$$$T_n :=\sum^{n-1}_{i=1} \left\lfloor \frac{i}{n - i} \right\rfloor.$$$
where $\lfloor x \rfloor$ denotes the greatest integer less than or equal to $x$ . Compute $T_{2009} - T_{2005}$ .
===Choices
29
27
26
20
22
23
25
24
... | 24 | general_qa | 131 |
The following is a multiple choice question (with answers).
===Question
A 7-month-old infant presents with history of vomiting & failure to thrive. Patient improved with IV glucose. After one month, returns with same complaints. On evaluation, found to have high glutamine and uracil. Which is the likely enzyme defect?
... | Ornithine transcarbamylase | general_qa | 116 |
The following is a multiple choice question (with answers).
===Question
We now define an algorithm: The definition of a(n) is square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of the inverse of the k-th cyclotomic polynomial. Given the input x_list (a series of values): [95, 96... | [0, 0, 0, 1, 0, 0, -1, -1, -1, 0] | general_qa | 435 |
The following is a multiple choice question (with answers).
===Question
Commonly seen surface contamination monitors use ( ) detectors for measuring alpha surface contamination and ( ) detectors for measuring beta surface contamination.
===Choices
High-pressure ionization chamber, gold-silicon barrier
Geiger-Müller tu... | ZnS(Ag), plastic scintillator | general_qa | 150 |
The following is a multiple choice question (with answers).
===Question
What are the dimensions in centimeters of the painting "Moving House" by Vasnetsov?
===Choices
53.5 x 67.9 cm
53.5 x 67.5 cm
53.5 x 67.6 cm
53.5 x 67.4 cm
53.5 x 67.1 cm
53.5 x 67.8 cm
53.5 x 67.7 cm
53.5 x 67.0 cm
53.5 x 67.3 cm
53.5 x 67.2 cm | 53.5 x 67.2 cm | general_qa | 155 |
The following is a multiple choice question (with answers).
===Question
(Weather Forecast Problem) If the possibility of rain tomorrow is only related to today's weather (whether it rains) and unrelated to the past weather, and let the probability of it raining today and tomorrow be $α$, and the probability of it not r... | 0.5749 | general_qa | 160 |
The following is a multiple choice question (with answers).
===Question
The gravitational drag effect distorts spacetime, causing huge ().
===Choices
Quasars
Planets
Spacetime vortex
Stars
Nebulae
Asteroids
Comets
Galaxies
Pulsars
Black hole | Spacetime vortex | general_qa | 65 |
The following is a multiple choice question (with answers).
===Question
Given a trapezoidal section channel with a flow rate of $Q = 30 \, \mathrm{m}^{3} / \mathrm{s}$, a roughness coefficient $n = 0.025$, a side slope coefficient $m = 1.5$, and a bottom slope $i = 0.0009$, try to select the width-to-depth ratio $\beta... | 3.202 | general_qa | 197 |
The following is a multiple choice question (with answers).
===Question
What is the order of development in the following loading sequence where edge gases intensify?
===Choices
Inverted split loading → Positive homogeneous loading → Positive split loading → Inverted homogeneous loading
Inverted split loading → Invert... | Positive homogeneous loading → Positive split loading → Inverted split loading → Inverted homogeneous loading | general_qa | 213 |
The following is a multiple choice question (with answers).
===Question
Where is the Canton Record published and how is it printed?
===Choices
Guangzhou, type-printing
Chongqing, screen printing
Chengdu, laser printing
Beijing, offset printing
Nanjing, 3D printing
Shenzhen, digital printing
Tianjin, letterpress printi... | Guangzhou, type-printing | general_qa | 99 |
The following is a multiple choice question (with answers).
===Question
If we assume a classical heat capacity of 3R and average atomic mass of 50, what is the total heat capacity of Earth's core?
===Choices
$9.76\times10^{27}$ J/K
$9.76\times10^{23}$ J/K
$9.76\times10^{26}$ J/K
$9.76\times10^{29}$ J/K
$9.76\times10^{... | $9.76\times10^{26}$ J/K | general_qa | 209 |
The following is a multiple choice question (with answers).
===Question
When a confined aquifer is discharged, the reduction in water volume is reflected in the density of ______ in the aquifer and the voids in the water-bearing medium ______.
===Choices
enlarge, expand
decrease, increase
lower, rise
reduce, diminish
... | reduce, diminish | general_qa | 98 |
The following is a multiple choice question (with answers).
===Question
Under China's Property Law, according to the General Principles of Civil Law, which of the following is not considered a civil right?
===Choices
Personal rights
Intellectual property rights
Voting rights
Succession rights
Family rights
Contractual... | Administrative rights | general_qa | 79 |
The following is a multiple choice question (with answers).
===Question
An uranium mineral containing $^{238}\textrm{U}$ and $^{206}\textrm{Pb}$ in the ratio 4 : 1 by mass.$t_{1/2} \: ^{238}\textrm{U}=4.5\times 10^9 \: year$. Assume all the lead present in mineral is formed from disintegration of $^{238}\textrm{U}$. Ag... | $$[1.449\times 10^9\: year]$$ | general_qa | 294 |
The following is a multiple choice question (with answers).
===Question
In May, the sales revenue of goods was 600,000 yuan. The seasonal index for that month was 120%. After eliminating the impact of seasonal factors, the sales revenue of goods for that month was () yuan.
===Choices
47
52
60
48
55
58
51.2
45
50
72 | 50 | general_qa | 99 |
The following is a multiple choice question (with answers).
===Question
There are mainly three types of large seaweeds: green algae, brown algae, and ___.
===Choices
white algae
blue algae
purple algae
orange algae
gray algae
red algae
black algae
yellow algae
pink algae
silver algae | red algae | general_qa | 66 |
The following is a multiple choice question (with answers).
===Question
The best time of day to mow your lawn is ___.
===Choices
during heavy rain
right after lunch
at high noon
before dinner
after midnight
in the afternoon
late at night
in the evening
during breakfast
in the early morning | in the evening | general_qa | 67 |
The following is a multiple choice question (with answers).
===Question
Let the matrix $A=\left( \begin{matrix} {{{{1}}}} & {{{{\frac{1} {2}}}}} & {{{{0}}}} \\ {{{{2}}}} & {{{{1}}}} & {{{{0}}}} \\ {{{{1}}}} & {{{{\frac{1} {2}}}}} & {{{{0}}}} \\ \end{matrix} \right), \beta=\left( \begin{matrix} {{{{0}}}} \\ {{{{0}}}} \\... | $$X={\left( \begin{matrix} {{c+{\frac{1} {2}}}} \\ {{2 c+1}} \\ {{c}} \\ \end{matrix} \right)}, c\in R
$$ | general_qa | 678 |
The following is a multiple choice question (with answers).
===Question
In which year was Amrita Sher-Gil (a Hungarian-Indian painter) briefly engaged to Yusuf Ali Khan?
===Choices
1939
1932
1931
1937
1930
1934
1935
1936
1933
1938 | 1931 | general_qa | 90 |
The following is a multiple choice question (with answers).
===Question
What is the forest cover area of Delhi in square kilometers according to the India State of Forest Report 2019?
===Choices
195.40
195.47
195.49
195.48
195.45
195.42
195.41
195.46
195.43
195.44 | 195.44 | general_qa | 111 |
The following is a multiple choice question (with answers).
===Question
Nuts and washers for couplings are selected according to the ( ) of the thread.
===Choices
External width w
Outer diameter d
Inner depth h
Inner radius r
Segment height h
Total length l
Horizontal span s
Surface texture t
Screw pitch p
Circumferen... | Outer diameter d | general_qa | 79 |
The following is a multiple choice question (with answers).
===Question
Simplify using the quotient rule. Assume the variables do not equal zero.
\(\frac{(a+2 b)^{-3}}{(a+2 b)^{-4}}\)
===Choices
(a+2b)^{2}
(a+2b)^{3}
(a+2b)
(a+2b)^1
(a+2b)^{-7}
(a+2b)^{-2}
(a+2b)^{-6}
(a+2b)^{-1}
(a+2b)^{-5}
(a+2b)^{1/2} | (a+2b) | general_qa | 133 |
The following is a multiple choice question (with answers).
===Question
Which act authorized the establishment of the United States Department of Defense?
===Choices
National Security Act of 1947
National Security Act of 1942
National Security Act of 1946
National Security Act of 1944
National Security Act of 1941
Nat... | National Security Act of 1947 | general_qa | 129 |
The following is a multiple choice question (with answers).
===Question
In the treatment of bulimia, the correct statement about cognitivebehavioral therapy is_____.
===Choices
The initial purpose is to suppress weight gain tendencies and prevent overeating practices
The primary focus is primarily on medication manage... | The initial goal is to establish healthy eating rules and reduceextreme weight loss behaviors | general_qa | 169 |
The following is a multiple choice question (with answers).
===Question
Under Chinese law,A and B conspired to commit fraud. Later, B realized that the victim was pitiable and withdrew under the pretense of an excuse, but A went ahead with the original plan and successfully obtained the money. B is considered to have c... | Completed crime | general_qa | 111 |
The following is a multiple choice question (with answers).
===Question
Dopamine is used for ().
===Choices
Bronchial asthma
Steroid hormone production
Severe hepatic impairment
Arrhythmia
Chronic renal failure
Pituitary gland anomaly
Acute cardiac insufficiency
Heart failure pulmonary edema
Ⅱ, Ⅲ degree atrioventricul... | Acute cardiac insufficiency | general_qa | 88 |
The following is a multiple choice question (with answers).
===Question
What are the similarities and differences between ship radiated noise and ship self-noise?
===Choices
Similarities: Both kinds of noise start from ship structures; Differences: They each alter sonar functioning uniquely, with radiated noise influe... | Similarities: The source of the noise is the same; Differences: They play different roles in the sonar equation, specifically as SL and NL. Radiated noise is far-field noise, while self-noise is near-field noise. | general_qa | 436 |
The following is a multiple choice question (with answers).
===Question
The necessary and sufficient condition for the vector group `alpha _1,alpha _2, cdots ,alpha _m` to be linearly dependent is ( )
===Choices
Any two vectors in `alpha _1,alpha _2, cdots ,alpha _m` are proportional;
Any vector in `alpha _1,alpha _2,... | There is a vector in `alpha _1,alpha _2, cdots ,alpha _m` that is a linear combination of the other vectors; | general_qa | 334 |
The following is a multiple choice question (with answers).
===Question
In a discharge tube, single-charged bromine ions are obtained and accelerated under a potential difference of 10,000 volts before entering a magnetic field with a strength of 12,000 Oersteds, perpendicular to the electric field. Calculate the linea... | 0.236 cm | general_qa | 176 |
The following is a multiple choice question (with answers).
===Question
What medicine should be used for patients with persistent high fever, restlessness, convulsions of hands and feet, dry tongue, or scorched and pierced tongue, and stringy and rapid pulse?
===Choices
Zhu Ye Shi Gao Tang
Xiexin Tang
Bai Tou Weng Tan... | Lingjiao Gou Teng Tang | general_qa | 127 |
The following is a multiple choice question (with answers).
===Question
In aerobic environments, the oxygen element in the water generated by the oxidation of organic materials by microorganisms originates from ( ).
===Choices
Combined Oxygen in Air Molecules
Oxygen Absorbed from Atmospheric Pressure
Oxygen Released f... | Dissolved Oxygen in the Environment | general_qa | 120 |
The following is a multiple choice question (with answers).
===Question
When microorganisms carry out sexual reproduction, including processes such as (), whether there is an exchange of genetic material is the most important criterion for judging sexual reproduction.
===Choices
Material Coupling and Kernel Matching
S... | Material Matching and Core Matching | general_qa | 124 |
The following is a multiple choice question (with answers).
===Question
Simplify the expression $\tan(x)^2 + \sin(x) \cdot \csc(x)$ by writing it in terms of sines and cosines, then simplify. The final answer does not have to be in terms of sine and cosine only.
===Choices
1 + sec(x)^2
1 + sec(x)
1 + tan(x)^2 - sin(x)... | sec(x)^2 | general_qa | 154 |
The following is a multiple choice question (with answers).
===Question
The illuminating candle in the LUU-2B/B aircraft parachute flare is made from what materials?
===Choices
Magnesium, sodium nitrate, & a polymer binder
Aluminum, sodium chlorate, & an epoxy resin
Zinc, potassium perchlorate, & a silicone binder
Iro... | Magnesium, sodium nitrate, & a polymer binder | general_qa | 161 |
The following is a multiple choice question (with answers).
===Question
The reaction to reduce the oxide with C is called _____ , and the reaction to reduce the oxide with CO or H2 is called _____.
===Choices
primary reduction;secondary reduction
simple reduction;complex reduction
solid reduction;gas reduction
initial... | direct reduction;indirect reduction | general_qa | 89 |
The following is a multiple choice question (with answers).
===Question
For vectors of size n, the worst-case time complexity of the efficient version of uniquify() is:
===Choices
$Theta(n^2)$
$Theta(n^2 \cdot log_2(n))$
$Theta(n \cdot log_2(n) / 2)$
$Theta(n + log_2n)$
$Theta(1)$
$Theta(n)$
$Theta(nlog_2n)$
$Theta(n ... | $Theta(n)$ | general_qa | 141 |
The following is a multiple choice question (with answers).
===Question
If the coordinates of point A are known to be (X=12345.7m, Y=437.8m) and the coordinates of point B are known to be (X=12322.2m, Y=461.3m), the azimuthal angle αAB of the coordinates of the AB side is ( ).
===Choices
145°
138°
155°
130°
140°
120°
... | 135° | general_qa | 144 |
The following is a multiple choice question (with answers).
===Question
Hydrogen is produced industrially by the steam-hydrocarbon re-forming process as given by:${H_2}O\left( g \right) + C{H_4}\left( g \right) \to CO\left( g \right) + 3{H_2}\left( g \right),If{K_c} = 3.8 \times {10^{ - 3}}at1000K$ what is the value of... | $$37.8$$ | general_qa | 182 |
The following is a multiple choice question (with answers).
===Question
Calculate the frequency of the hydrogen transition n = 101 \rightarrow n = 100, where n represents the principal quantum number.
===Choices
1.2 × 10^9 Hz
4.5 × 10^9 Hz
1.6 × 10^9 Hz
9.7 × 10^8 Hz
5.1 × 10^9 Hz
6.5 × 10^9 Hz
2.2 × 10^10 Hz
8.8 × 10... | 6.5 × 10^9 Hz | general_qa | 162 |
The following is a multiple choice question (with answers).
===Question
Private property, freedom of choice and the pricing mechanism are some features that are peculiar to capitalism. These characteristics alone, however, do not accurately describe modern economies. Identify three essential features of modern economie... | Advanced technology, extensive specialization, use of money | general_qa | 176 |
The following is a multiple choice question (with answers).
===Question
A uniform disc of radius r and mass m is charged uniformly withe charge q. this disc is placed flat on a rough horizontal surface having coefficient of friction $ \mu $ A uniform magnetic field is present in a circular region of radius a (> r) but ... | 8 | general_qa | 158 |
The following is a multiple choice question (with answers).
===Question
What category of society do morality, ethics, customs, etc. belong to?
===Choices
Physiological needs
Informal system
Political structure
Economic model
Legal framework
Formal institution
Cultural association
Regulatory agency
Universal concept
Ge... | Informal system | general_qa | 69 |
The following is a multiple choice question (with answers).
===Question
Two magnetic poles one of which is 4 time as strong as the other exert a force of $64\ mg.wt$. When placed 10cm apart in air, strength of the poles are $(g=10m{ s }^{ 2 })$
===Choices
7A-m and 21Am
5A-m and 20Am
6A-m and 10Am
3A-m and 12Am
7A-m an... | 6A-m and 10Am | general_qa | 162 |
The following is a multiple choice question (with answers).
===Question
In which year was dancer Wang Kefen born?
===Choices
1920
1929
1923
1921
1922
1928
1925
1926
1924
1927 | 1927 | general_qa | 77 |
The following is a multiple choice question (with answers).
===Question
Individual units refer to specific and individual land territories, such as prefectures, districts, areas, and ____, etc.
===Choices
environmental issues
natural regions
technological advancements
architectural styles
social demographics
urban zon... | natural regions | general_qa | 76 |
The following is a multiple choice question (with answers).
===Question
Determine the activity of $\beta$-galactosidase in the cell-free extract of $Penicillium Chrysogeum$. The extract ($0.25ml$) is incubated with $3 \times 10^{-3} M$ p-nitrophenyl-$\beta$-galactoside and buffer, with a total volume of $1.0ml$. At reg... | 0.059 units/mg protein | general_qa | 424 |
The following is a multiple choice question (with answers).
===Question
Consider a call option on a non-dividend-paying stock. Assume the stock price is $49, the option strike price is $50, the risk-free rate is 5% per annum, the annual volatility of the stock price is 20%, the option maturity is 20 weeks (0.3846 years... | 0.522 | general_qa | 168 |
The following is a multiple choice question (with answers).
===Question
Among the following statements, the issues that should be paid attention to in numerical computation are ().
===Choices
Minimize the operation quantity, enhance the process complexity. Prevent subtraction of unlike numbers. Avoid smaller numbers
R... | Simplify the calculation process, reduce the number of operations. Avoid subtracting two similar numbers. Prevent large numbers from "swallowing" smaller numbers. | general_qa | 281 |
The following is a multiple choice question (with answers).
===Question
The porosity of sintered $\mathrm{Al_{2}O_{3}}$ is known to be 5%, with its $E \!=\! 370 \mathrm{~GPa}$. If another sintered $\mathrm{Al_{2}O_{3}}$ is measured with $E \!=\! 270 \mathrm{~GPa}$, what is its porosity?
===Choices
$$
19. 61 \%
$$
$$
1... | $$
19. 61 \%
$$ | general_qa | 233 |
The following is a multiple choice question (with answers).
===Question
Place the chlorophyll extract under direct light and observe-what will occur?
===Choices
The reflected light is blue, and the transmitted light is yellow.
Reflected light and transmitted light are both red.
The reflected light is yellow, and the t... | Reflected light is red, and transmitted light is green. | general_qa | 153 |
The following is a multiple choice question (with answers).
===Question
The origin of plant stories can be traced back to which early era?
===Choices
Agricultural era
Renaissance period
Industrial era
Enlightenment era
Stone Age
Digital era
Iron Age
Bronze Age
Medieval period
Modern era | Agricultural era | general_qa | 68 |
The following is a multiple choice question (with answers).
===Question
Charge -q and + q located at A and B, respectively, constitute an electric dipole.Distance AB=2a, O is mid point of the dipole and OP is perpendicular to AB.A charge q is lace at P where OP =y and Y >> 2a.The charge Q exprience an electrostatic for... | $$\frac{F}{3}$$ | general_qa | 217 |
The following is a multiple choice question (with answers).
===Question
A uniform wooden stick of mass $1.6$ kg and length $l$ rests in an inclined manner on a smooth, vertical wall of height $h(<l)$ such that a small portion of the stick extends beyond the wall. The reaction force of the wall on the stick is perpend... | $$\dfrac { h }{ l } = \dfrac { 3\sqrt { 3 } }{ 16 } ,\quad f= \dfrac { 16\sqrt { 3 } }{ 3 } N$$ | general_qa | 712 |
The following is a multiple choice question (with answers).
===Question
Eumerica makes bottled air at three plants in Vienna, Athens, and Moscow, and ships crates of their products to distributors in Venice, Frankfurt, and Paris. Each day the Athens plant produces 25 thousand crates, while Vienna can produce up to 18 t... | 10,360,000 | general_qa | 363 |
The following is a multiple choice question (with answers).
===Question
Find the volume of the region bounded by \((\frac{x^2}{a^2}+\frac{y^2}{b^2}+\frac{z^2}{c^2})^2=ax (a,b,c>0)\).
===Choices
\(\frac{1}{3}\pi a^2b^2c^2 \)
\( rac{1}{3}\pi ab^2c^2\)
\( rac{1}{3}\pi ab^3c^3\)
\(\frac{1}{3}\pi a^3bc\)
\(\frac{1}{3}\pi a... | \(\frac{1}{3}\pi a^3bc\) | general_qa | 238 |
The following is a multiple choice question (with answers).
===Question
The renowned environmental art theorist Dob explains: Environmental design, "as an art, is greater than architecture and more extensive than planning."
===Choices
More Beautiful than Natural Scenery
More Culturally Relevant than Sociology
More Vis... | More Emotionally Rich than Engineering | general_qa | 118 |
The following is a multiple choice question (with answers).
===Question
In the laboratory, to obtain kinetic data, experiments were conducted using a piston flow reactor filled with 1.6L of catalyst. The reaction takes place at $573K, 2000kPa$. Pure gaseous reactant A is fed, and on the catalyst, the reaction A→R occur... | 80L | general_qa | 254 |
The following is a multiple choice question (with answers).
===Question
In a certain packed absorption tower, methanol is absorbed from a mixed gas using pure water in a countercurrent flow. The gas inlet flow rate is 20 kmol/($\mathrm{m^{2}} \cdot \mathrm{h}$), with a gas inlet concentration of 0.06, achieving a recov... | 1.65m | general_qa | 245 |
The following is a multiple choice question (with answers).
===Question
What are the main processes that make up the straw preparation process?
===Choices
Gathering, dry chopping, wet processing
Stocking, dry trimming, moist adjustment
Accumulating, dry slicing, liquid treating
Storing, sharp trimming, moist condition... | Stockpiling, dry cutting, wet preparation | general_qa | 124 |
The following is a multiple choice question (with answers).
===Question
There is a circular pipe through which water is flowing at $\nu=0.013 \text{ cm}^{2}/\text{s}$. The measured flow rate is $40 \text{ cm}^{3}/\text{s}$. Over a pipe section 25m long, the head loss is measured to be $2 \text{ cm}$. Try to determine t... | 2.28cm | general_qa | 170 |
The following is a multiple choice question (with answers).
===Question
Let the number of people taking the elevator from the ground floor follow a Poisson distribution with a mean of 10. Suppose this building has a total of $N+1$ floors. Each passenger has an equal probability of choosing any floor to exit the elevato... | $$
E ( X )=N \cdot( 1-\mathrm{e}^{-\frac{1 0} {N}} )
$$ | general_qa | 424 |
The following is a multiple choice question (with answers).
===Question
The following liquid-phase reactions are carried out in a batch reactor:
$$
\mathrm{A + B} \rightleftharpoons \mathrm{R}, \\\mathrm{A + R} \rightleftharpoons \mathrm{S}.
$$
The initial concentrations of the reactant mixture are:
$$
c_{\mathrm{A 0}}... | $$
\begin{array} {c} {{{c_{B}=2. 4 ~ \mathrm{m o l / L}}}} \\ {{{c_{S}=0. 1 ~ \mathrm{m o l / L}}}} \\ \end{array}
$$ | general_qa | 811 |
The following is a multiple choice question (with answers).
===Question
What is required in the process of developing the megaspore into the embryo sac during the sexual reproduction of angiosperms?
===Choices
One mitosis produces six nuclei.
The second meiotic division forms six nuclei.
Three rounds of meiosis result... | Three rounds of mitosis result in the formation of 8 nuclei. | general_qa | 156 |
The following is a multiple choice question (with answers).
===Question
What are the three theories about the origin of Proto-Malay language mentioned in the 'Encyclopedia of Malaysia: Early History'?
===Choices
The Yunnan theory, the Seafarer theory, and the Borneo theory
The Yunnan theory, the Seafarer theory, and t... | The Yunnan theory, the Seafarer theory, and the Taiwan theory | general_qa | 228 |
The following is a multiple choice question (with answers).
===Question
The fetal membranes include the yolk sac, amnion, chorion, as well as the allantois and ______.
===Choices
placental barrier
maternal artery
placental wall
chorionic villus
embryonic disc
amniotic fluid
blood vessels
endometrial layer
umbilical co... | umbilical cord | general_qa | 88 |
The following is a multiple choice question (with answers).
===Question
The main reason why the Ward equivalent method may have relatively large errors in load flow calculations is( ).
===Choices
This method overestimates the resistance factors.
System representation follows mostly ideal assumptions.
Load estimations ... | The pursuit of equivalence is conducted under basic operational modes. | general_qa | 124 |
The following is a multiple choice question (with answers).
===Question
Decide whether each of these statements is TRUE (T) or FALSE (F). When the error signal increases from zero, when at the set point, to some value and then back to zero again: (i) With proportional control, the controller output mirrors the change a... | (i) F (ii) T | general_qa | 145 |
The following is a multiple choice question (with answers).
===Question
The best first-degree polynomial approximation of $f(x) = \sqrt{x}$ on the interval $\left[ 0, 1 \right]$ is ____, using $P_{0}$ and $P_{1}$ as basis functions.
===Choices
$$
S_{\mathrm{i}}^{*} ( x )=\frac{7} {1 3}+\frac{2 1} {1 7} x
$$
$$
S_{\mat... | $$
S_{\mathrm{i}}^{*} ( x )=\frac{4} {1 5}+\frac{1 2} {1 5} x
$$ | general_qa | 463 |
The following is a multiple choice question (with answers).
===Question
Which of the following structures of Marchantia polymorpha L. belongs to the sporophyte generation (chromosome 2n)?
===Choices
capsula
sporangiophore
spore sacs
rhizoids
scales
antheridiophore
gemma
air chambers
thallus
archegoniophore | capsula | general_qa | 87 |
The following is a multiple choice question (with answers).
===Question
A radio transmitting station operating at a frequency of $120$MHz has two identical antennas that radiate in phase. Antenna $B$ is $9m$ to the right of antenna $A$. Consider point $P$ at a horizontal distance $x$ to the right of antenna $A$. The va... | $$x=1.65m,n=3$$ | general_qa | 233 |
The following is a multiple choice question (with answers).
===Question
A hydrogen atom is in an excited state of principle quantum number $n .$ It emits a photon of wavelength $\lambda$ when returns to the ground state. The value of $n$ is $( R =$ Rydberg constant )
===Choices
$$\sqrt { \lambda R ( \lambda R ... | $$\sqrt { \lambda R ( \lambda R - 1 ) }$$ | general_qa | 266 |
The following is a multiple choice question (with answers).
===Question
Different political and economic conditions determine the differences in foreign trade policies of different countries, but the composition of foreign trade policies of all countries is the same. In addition to its general foreign trade policy and ... | Foreign Trade Country Policy | general_qa | 120 |
The following is a multiple choice question (with answers).
===Question
When evaluating a test substance based on the maximum no-observed-adverse-effect level obtained from chronic toxicity studies, if the maximum no-observed-adverse-effect level ( ) is reached, it may be considered permissible for use in food.
===Cho... | 100 times greater than or equal to the potential intake for humans | general_qa | 193 |
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