problem stringlengths 14 4.09k | solution stringlengths 1 802k | task_type stringclasses 3
values | problem_tokens int64 5 895 |
|---|---|---|---|
The following is a multiple choice question (with answers).
===Question
The number of spores in a cyst can be any natural number, while the number of ascospores in an ascus is generally ().
===Choices
4n
n^2
2n+1
6n
8n
5n
2n
3n
7n
n+1 | 2n | general_qa | 79 |
The following is a multiple choice question (with answers).
===Question
A house is designed to have passive solar energy features. Brickwork incorporated into the interior of the house acts as a heat absorber. Each brick weighs approximately 18 kg. The specific heat of the brick is 0.85 J/g-K. How many bricks must be i... | 1.8×10 $^{4}$or 18,000 bricks | general_qa | 304 |
The following is a multiple choice question (with answers).
===Question
A uniform sphere of radius $R$ is placed on a rough horizontal surface and given a linear velocity $v_0$ and angular velocity $w_0$ as shown. The sphere comes to rest after moving some distance to the right. It follows that
===Choices
2v_0 = 7 w_0... | $$2v_0 = 5 w_0 R$$ | general_qa | 178 |
The following is a multiple choice question (with answers).
===Question
What is the quickest and most flexible way to connect with home?
===Choices
Parent-Teacher Conference Day
School Newsletter
Email
Community Bulletin Board
Regular Mail
Written Communication
Social Media Messaging
Home Visit
Video Conference
Teleph... | Telephone Contact | general_qa | 63 |
The following is a multiple choice question (with answers).
===Question
Integrate the approximation $\sin(t) \approx t - \frac{ t^3 }{ 6 } + \frac{ t^5 }{ 120 } - \frac{ t^7 }{ 5040 } + \cdots$ evaluated at $\pi \cdot t$ to approximate $\int_{0}^1{\frac{ \sin(\pi \cdot t) }{ \pi \cdot t } d t}$
===Choices
0.58678689
0... | 0.58678687 | general_qa | 223 |
The following is a multiple choice question (with answers).
===Question
Certain physical properties of the fine-grained soil layer in a building foundation are as follows: density $\rho/ 1.95 \mathrm{g/cm}^{3}$, relative density $d_{m}$ 2.70 specific gravity, water content $w/23\%$, liquid limit $w_{\mathrm{L}}/21\%$, ... | Silty soil, wet, compacted | general_qa | 221 |
The following is a multiple choice question (with answers).
===Question
If constructing a CSMA/CD bus network with a rate of 100 Mb/s, where the signal propagation speed in the cable is $2×10^{-5} \, km/s$, and the minimum data frame length is 125 bytes, the maximum length of the bus cable is______. (Assume there are n... | 1000m | general_qa | 152 |
The following is a multiple choice question (with answers).
===Question
What is the radius of convergence for $\sum_{n=0}^{\infty} \ \operatorname{c o s} \left( \ i n \right) z^{n}$?
===Choices
$$
\pi
$$
$$
{\frac{1} {\pi}}
$$
$$
{\frac{2} {\mathrm{e}}}
$$
$$
{\frac{1} {\mathrm{e}}}
$$
$$
\sqrt{2}
$$
$$
\mathrm{e}
$$
... | $$
{\frac{1} {\mathrm{e}}}
$$ | general_qa | 161 |
The following is a multiple choice question (with answers).
===Question
1 L concentrated NACL solution is electrolysed using Hg cathode. Calculate the pH of solution after passing 0.005 F change to this solution. Assume volume of electrolyte remains constant the electrolysis
===Choices
12.3
5.3
13.3
12.1
11.3
12.7
11.... | 12.7 | general_qa | 119 |
The following is a multiple choice question (with answers).
===Question
In mine blasting, stray current refers to the current from outside the electric blasting network, and when it exceeds (), reliable measures must be taken to prevent stray current.
===Choices
70mA
60mA
55mA
35mA
25mA
30mA
45mA
50mA
40mA
20mA | 30mA | general_qa | 88 |
The following is a multiple choice question (with answers).
===Question
A car is moving on a plane inclined at $30^0$ to the horizontal with an acceleration of $9.8 m/s^2$ parallel to the plane upward. A bob is suspended by s string from the roof. The angle in degrees which the string makes with the vertical is : (assu... | $$20^0$$ | general_qa | 173 |
The following is a multiple choice question (with answers).
===Question
What should the so-called timely review mean?
===Choices
Review at the beginning of the next study session
Same-day review
Review after a week
Review every other day
Review after a year
Review right before an exam
Review once a month
Review every ... | Review immediately after studying | general_qa | 81 |
The following is a multiple choice question (with answers).
===Question
A particle is moving in a plane and whose acceleration and velocity given by $ ec { a } = (\hat { i } + \hat { j } )m/s^2$ and $ ec{ v } = (\hat { 4i } + \hat { 3j } )m/s$ respectively.the tangential acceleration of the particle is
===Choices
$$\d... | $$0$$ | general_qa | 275 |
The following is a multiple choice question (with answers).
===Question
The cell, $Pb | H_{2}(1\ atm)|| H^{+} (pH = x)|$normal calomel electrode, has an emf of $0.67$ volt as $25^{\circ}C$. Calculate the $pH$ of the solution. The oxidation potential of calomel electrode on the hydrogen scale is :$-0.28\ volt$.
===Choi... | $pH = 6.61$. | general_qa | 192 |
The following is a multiple choice question (with answers).
===Question
Consider an example of forced convection within a pipe. The local heat transfer coefficient is valid at the point it is evaluated at, and in its immediate vicinity. When the length of pipe as a whole is of concern, the average heat transfer coeffic... | h_av= [{^L\int_0h_x(T_s - T)dx} / (T_s -T_av)] | general_qa | 414 |
The following is a multiple choice question (with answers).
===Question
There is a step-index optical fiber, with the refractive indices of the core and cladding being $n_{1}=1.46, \, n_{2}=1.45$. Determine the values of $\mathrm{NA}, \ \theta_{\mathrm{max}}, \ \Delta T / L$, and $BL$ How many are they?
===Choices
$$0... | $$0.17$$
$$
9. 8^{\circ}
$$
$$
3 3. 2 ~ \mathrm{n s} / \mathrm{k m}
$$
$$
3 0 \ \mathrm{M b} \cdot\mathrm{k m / s}
$$ | general_qa | 739 |
The following is a multiple choice question (with answers).
===Question
Do you know which animated film won the Best Picture Award at the London International Film Festival in 1978?
===Choices
The Golden Phoenix Dance
The Peacock Feather Quest
The Crystal Palace Escape
The Dragon King's Vessel
The Monkey King Rebellio... | The Monkey King Rebellion | general_qa | 94 |
The following is a multiple choice question (with answers).
===Question
A right circular cone is completely contained in a sphere. Let $p$ be the maximum possible ratio of the volume of the cone to the volume of the sphere and let $q$ be the maximum possible ratio of the lateral surface area of the cone to the surface ... | 864 | general_qa | 174 |
The following is a multiple choice question (with answers).
===Question
In which cause of folding, the thickness of fold does not remain uniform?
===Choices
Recumbent folding
Flowage folding
Box folding
Parallel folding
Concentric folding
Flexural slip folding
Syncline folding
Anticline folding
Isoclinal folding
Chevr... | Flowage folding | general_qa | 74 |
The following is a multiple choice question (with answers).
===Question
The inflection points of the curve ( y = 3{x^4} - 4{x^3} + 1 ) are ( ).
===Choices
(1, 11/27) and (2/3, 0)
(1, 11/27) and (2/3, -1/27)
(11/27, 2/3) and (1, 0)
(2/3, -11/27) and (0, 1)
(1, 11/27) and (2/3, 1)
(2/3, -11/27) and (1, 0)
(2/3, 11/27) a... | (2/3, 11/27) and (0, 1) | general_qa | 240 |
The following is a multiple choice question (with answers).
===Question
Which of the following composers is considered a pioneer of "electronic music," and whose work **Electronic Studies** marked the beginning of a new era in electronic music?
===Choices
La Monte Young
Philip Glass
Karlheinz Stockhausen
Igor Stravins... | Karlheinz Stockhausen | general_qa | 95 |
The following is a multiple choice question (with answers).
===Question
Water conservation forest, also known as water source forest.Among the following options, which description of the "water conservation forest" is correct?
===Choices
By increasing the density of forest vegetation, improving climate regulation, and... | Forests managed and cultivated for the purpose of regulating the flow of water sources, improving water quality, and enhancing the function of forests in conserving water sources. | general_qa | 294 |
The following is a multiple choice question (with answers).
===Question
A nozzle has air flowing through it at a rate of 0.25 lb/sec. The inlet conditions are; P_i = 35 psia, T_i = 650°R and specific volume = 6.0 ft^3/lb. The air enters with a velocity of 550 fps and leaves with a pressure of 18 psia. Compute the nozzl... | 0.0019 ft^2 | general_qa | 238 |
The following is a multiple choice question (with answers).
===Question
Assume that the terrestrial magnetism is due to a short magnet at the centre of the earth. Refer to a point on the surface of the earth. Given : magnetic latitude of the reference point = $\lambda, \delta $ = angle of dip and R = radius of earth. T... | $$tan \lambda$$ | general_qa | 193 |
The following is a multiple choice question (with answers).
===Question
Find the area bounded by the curves $y = 3 \cdot x + 3$, $y = 3 \cdot \cos(x)$, and $y = 0$.
===Choices
4.2
4.6
4.1
4.7
4.4
4.5
4.9
4.8
4.3
4.0 | 4.5 | general_qa | 95 |
The following is a multiple choice question (with answers).
===Question
What is the value of the ratio of vertical component and larger horizontal component (RV) for 84.1 percentile?
===Choices
0.75
0.72
0.48
0.88
0.60
0.70
0.83
0.65
0.55
0.98 | 0.65 | general_qa | 91 |
The following is a multiple choice question (with answers).
===Question
The increase in blood carbon dioxide primarily stimulates breathing through ( ).
===Choices
Stimulation of medullary pain receptors
Stimulation of cardiopulmonary receptors
Direct stimulation of central respiratory neurons
Stimulation of carotid s... | Stimulation of central chemoreceptors | general_qa | 115 |
The following is a multiple choice question (with answers).
===Question
What opera did Walt Whitman and Peter Doyle travel to New York to see in May of 1870?
===Choices
Il Trovatore
Mefistofele
Don Carlos
Aida
Il Pirata
Poliuto
La Traviata
Otello
Rigoletto
Lucia di Lammermoor | Poliuto | general_qa | 86 |
The following is a multiple choice question (with answers).
===Question
Nuclear fusion in the Sun will().
===Choices
create stable compounds like water and methane
generate only hydrogen and helium
generate primarily radioactive isotopes only
produce heavier elements like silicon and sulfur
produce helium exclusively ... | create elements up to and including oxygen | general_qa | 99 |
The following is a multiple choice question (with answers).
===Question
Norman Stevens lives in a town where 28% of the property tax is passed along to the county government. Mr. Stevens owns a home which was assessed for $17,400. If the town's tax rate is $24.90 per $1,000, how much of his tax was passed along to the ... | Both $121.31 and $121.30 + $0.01 are correct | general_qa | 194 |
The following is a multiple choice question (with answers).
===Question
A flat-bottomed direct-acting follower cam mechanism has a pressure angle of what degree?
===Choices
0°- 45°
35°- 75°
5°
25°
0°
10°- 50°
0°- 65
0°- 80°
45°- 80°
15°- 70° | 0° | general_qa | 103 |
The following is a multiple choice question (with answers).
===Question
The correct way to enable MS-DOS functionality in windows 7 is ().
===Choices
Find "CMD" in the "All Programs" section of the Start Menu.
Right-click on the desktop and select "Start", then enter "CMD" in the address bar of the search.
Create a sh... | Right-click on the desktop and select "Start", then enter "CMD" in the address bar of the search. | general_qa | 190 |
The following is a multiple choice question (with answers).
===Question
For the flow in the boundary layer over a flat plate, if the velocity distribution within the boundary layer is given as: then the ratio of the displacement thickness to the momentum loss thickness of that boundary layer is ( ).[Keep 1 decimal plac... | 2.7 | general_qa | 106 |
The following is a multiple choice question (with answers).
===Question
The characteristics of world religions are ().
===Choices
Restricted membership, adherence to precedent, hierarchical submission
Isolation of followers, routine rituals, subordination to hierarchy
Centralized control of faith, traditional practice... | Universality of divinity and believers, creative nature of production, independence of organization | general_qa | 156 |
The following is a multiple choice question (with answers).
===Question
What is the formula for computing the Azimuth angle?
===Choices
$\tan\beta={\frac{V_E}{V_N}}$
$\tan\beta={\frac{V_N}{V_E}}$
$\tan\beta={\frac{-V_S}{V_N}}$
$\tan\beta={\frac{-V_E}{V_S}}$
$\tan\beta={\frac{V_S}{V_E}}$
$\tan\beta={\frac{V_N}{V_S}}$
$... | $\tan\beta={\frac{-V_E}{V_S}}$ | general_qa | 178 |
The following is a multiple choice question (with answers).
===Question
The practice of making and using "porcelain" originated in which Chinese dynasty?
===Choices
Sui Dynasty
Shang Dynasty
Tang Dynasty
Ming Dynasty
Yuan Dynasty
Song Dynasty
Qing Dynasty
Xia Dynasty
Jin Dynasty
Han Dynasty | Song Dynasty | general_qa | 70 |
The following is a multiple choice question (with answers).
===Question
______ uses the concept of pseudo-random sequence
===Choices
DES encryption
Caesar cipher
Data integrity check
Symmetric key model
Secure socket layer
Block cipher
AES encryption
Stream cipher
Transposition block
Hill cipher | Stream cipher | general_qa | 63 |
The following is a multiple choice question (with answers).
===Question
What is the relationship between the trajectory area S_{n}, in k-space and the trajectory area A_{n}, in r-space of a Bloch electron moving in a magnetic field?
===Choices
A_{n},=(\frac{kc},{qB}, )^{2},S_{n},
A_{n},=(\frac{kc},{qB}, )^{4/3},S_{n},... | A_{n},=(\frac{kc},{qB}, )^{2},S_{n}, | general_qa | 278 |
The following is a multiple choice question (with answers).
===Question
The permanganate ion is a common oxidizing agent. What is the standard potential of the $\mathrm{M n O_{4}^{-}, H^{+} / M n^{2+}}$ couple at $\mathrm{p H}=6. 0 0$?
===Choices
$$
{+0. 8 5 \mathrm{~ V}}
$$
$$
{-0. 3 2 \mathrm{~ V}}
$$
$$
{+1. 3 3 \m... | $$
{+0. 9 4 \mathrm{~ V}}
$$ | general_qa | 253 |
The following is a multiple choice question (with answers).
===Question
Determine the distance downstream from the bow of a ship moving at 7.59ktsrelative to still water at which the boundary layer becomes turbulent. Also, determine the boundary layer thickness at this point and the total friction drag coefficient for ... | 0.47 ft, 0.0102 ft, 1.92 × 10^-3 | general_qa | 426 |
The following is a multiple choice question (with answers).
===Question
If the investment temporarily increases by $15 billion and the marginal propensity to consume is 0.9, then the income level will increase ().
===Choices
$220 billion
$190 billion, drop to half of the initial level
$150 billion, drop to half of the... | $150 billion, then return to the initial level | general_qa | 166 |
The following is a multiple choice question (with answers).
===Question
Consider a finite wing with an aspect ratio of 6. Assume an elliptical lift distribution. The lift slope for the airfoil section is 0.1/degree. Calculate and compare the lift slopes for a straight wing.
===Choices
$$
3. 2 7 \mathrm{~ p e r ~ r a d... | $$
3. 2 7 \mathrm{~ p e r ~ r a d i a n}
$$ | general_qa | 312 |
The following is a multiple choice question (with answers).
===Question
The length of a certain cement mixing pile composite foundation pile is $12 \text{ m}$, with an area replacement ratio of $m = 0.21$. The additional pressure at the top of the composite soil layer is $p_{z} = 114 \text{kPa}$, and the additional pre... | 14.69cm | general_qa | 289 |
The following is a multiple choice question (with answers).
===Question
What is the point at the highest efficiency of a centrifugal pump called?
===Choices
Work Site
High Flux Point
Energy Peak
Maximum shaft power point
Operational point
Efficiency Hub
Critical Speed Location
Optimal Rotation Zone
Design Points
Torqu... | Design Points | general_qa | 72 |
The following is a multiple choice question (with answers).
===Question
A beam of light with a wavelength of 0.5 μm is incident at a 45° angle from the air onto the surface of a medium with a permittivity of $2+j 0.6$. What is the angle of refraction of this light wave in the medium?
===Choices
$$
\operatorname{a r c ... | $$
\operatorname{a r c s i n} {\frac{\sqrt{6}} {6}}
$$ | general_qa | 331 |
The following is a multiple choice question (with answers).
===Question
After n generations in a 14N culture medium, how many double-stranded DNA molecules contain only 14N, if a double-stranded DNA fragment was initially labeled with 15N isotope?
===Choices
2^(n-1)-1
2^n+2
2^(n-1)
2^n-1
2^n-2
2^n+1
2^(n-1)-2
2^(n-2)
... | 2^n-2 | general_qa | 116 |
The following is a multiple choice question (with answers).
===Question
After a beam of light travels through the suburbs for 2 km, its intensity becomes $1/3$ of the original. After passing through the city for another 2 km, its intensity becomes $1/50$ of the original. If the initial intensity of the beam is $P=1 \, ... | 0.02W,6.1dB/km | general_qa | 270 |
The following is a multiple choice question (with answers).
===Question
Which method can only change the form and location of pollutants but cannot completely solve the pollution problem caused by POPs?
===Choices
Incineration
Distillation
Extraction
Degradation
Physical
Filtration
Chemical
Stabilization
Microbial
Sed... | Physical | general_qa | 74 |
The following is a multiple choice question (with answers).
===Question
Which of the following statements about economic history are correct?
1. Kondratieff emphasized explaining long waves through external incidental factors. Each economic long wave is attributed to the disruption and restoration of economic equilibri... | 3,4 | general_qa | 235 |
The following is a multiple choice question (with answers).
===Question
A brass wire of cross-sectional area $2\ mm^{2}$ is suspended from rigid support and a body of volume $100cm^{3}$ is attached to its other end. If the decrease in the length of the wire is $0.11\ mm$, when the body is completely immersed in water, ... | $$31.9 m$$ | general_qa | 203 |
The following is a multiple choice question (with answers).
===Question
What are the main types of minerals currently used to produce titanium metal?
===Choices
ilmenite (FeTiO3) and spinel (MgAl2O4)
rutile (TiO2) and hematite (Fe2O3)
ilmenite (FeTiO3) and pyrite (FeS2)
ilmenite (FeTiO3) and hematite (Fe2O3)
rutile (T... | rutile (TiO2) and ilmenite (FeTiO3) | general_qa | 190 |
The following is a multiple choice question (with answers).
===Question
A circle of maximal area is inscribed in the region bounded by the graph of $y = -x^2 - 7x + 12$ and the $x$ -axis. The radius of this circle is $\frac{\sqrt{p} + q}{r}$ , where $p$ , $q$ , and $r$ are integers and $q$ and $r$ are relatively prime.... | 8 | general_qa | 124 |
The following is a multiple choice question (with answers).
===Question
The flow form of labor force is ().
===Choices
career development
manpower training
labor
training
people workforce
social work
economic activity
people
job knowledge
civilian employment | labor | general_qa | 55 |
The following is a multiple choice question (with answers).
===Question
What is the most abundant form of carbon stored in the global seawater carbon pool?
===Choices
ATP
CH4
RNA
DIC
DOC
C2H6
POC
CO2
HCO3
NAD | DIC | general_qa | 63 |
The following is a multiple choice question (with answers).
===Question
When a suspension medium is filtered by a straight-flow air filter, the positive force can be ignored. If the concentration of the filter pulp decreases for some reason, the ratio of the volume of the filter cake to the volume of the obtained filtr... | 1.118;0.9 | general_qa | 234 |
The following is a multiple choice question (with answers).
===Question
Let current $i=2\ A$ be flowing in each part of a wire frame as shown in fig. The frame is a combination of two equilateral triangles $ACD$ and $CDE$ of side $1\ m$. It is placed in uniform magnetic field $B=4\ T$ acting perpendicular to the plan... | 24 N | general_qa | 139 |
The following is a multiple choice question (with answers).
===Question
What drug should be used to treat Shaoyin headache?
===Choices
Houttuynia
Coptis
Paeonia
Asarum
Mentha
Astragalus
Scutellaria
Salvia
Panax
Angelica | Asarum | general_qa | 69 |
The following is a multiple choice question (with answers).
===Question
The direct object of a crime refers to ().
===Choices
A specific part of the social relationship directly infringed upon by a specific type of crime.
The direct action which precisely infringes on a specific
The specific act committed which direct... | A specific type of social relationship directly infringed upon by a specific type of crime | general_qa | 174 |
The following is a multiple choice question (with answers).
===Question
An aluminium container of mass $100\: gm$ contains $200\: gm$ of ice at $-20 ^\circ C$. Heat is added to the system at the rate of $100\: cal/s$. Find the temperature of the system after 4 minutes (specific heat of ice $+0.5$ and $L = 80\: cal/gm$,... | $$26.36 ^\circ C$$ | general_qa | 229 |
The following is a multiple choice question (with answers).
===Question
Among the following options, which one accurately describes the "hydrological effects of canopy interception"?
===Choices
The rainfall came earlier, lasted for a shorter duration, and saw an increase in both the amount and intensity of rainfall.
R... | The rainfall is delayed and prolonged, with both the amount and intensity of rainfall decreasing. | general_qa | 233 |
The following is a multiple choice question (with answers).
===Question
An electron and a proton of equal momentum enter a uniform magnetic field normal to the lines of force. If the radii of circular paths be $r_e$ and $r_p$, respectively, then
===Choices
\left (\dfrac {r_e}{r_p} \right )=\left (\dfrac {m_e}{m_p} \ri... | $$\left (\dfrac {r_e}{r_p}\right )=\left (\dfrac {1}{1}\right )$$ | general_qa | 324 |
The following is a multiple choice question (with answers).
===Question
A woman is the fee simple owner of a 1,000-acre tract of land. Half of the tract is swampland totally unfit for cultivation, though it is heavily covered with valuable hardwood timber. The other half is also covered with valuable timber, but it wou... | succeed, because a life tenant may not exploit natural resources where no such prior use had been made. | general_qa | 459 |
The following is a multiple choice question (with answers).
===Question
What is the method called where rice seedlings cultivated in dry nurseries with soil are manually or mechanically cast into the air, allowing the soil-laden seedlings to land by their own momentum into the field for transplantation?
===Choices
Wet... | Dry Broadcasting of Seedlings | general_qa | 131 |
The following is a multiple choice question (with answers).
===Question
Under the influence of thermal neutrons, a $U^{235}$ nucleus undergoes fission, resulting in two fragments with mass numbers 95 and 139, while also emitting two neutrons. Calculate the total energy released during the fission process.
===Choices
~... | ~200 MeV (Mega-electron volts). | general_qa | 203 |
The following is a multiple choice question (with answers).
===Question
What has the highest binding strength between water and sludge particles in the sludge?
===Choices
Internal Water
Hydrophobic Water
Pore water
Osmotic Bound Water
Capillary-bound water
External Bound Water
Hygroscopic Moisture
Surface Adsorbed Wat... | Surface Adsorbed Water | general_qa | 85 |
The following is a multiple choice question (with answers).
===Question
Which of the following best describes the balance the Supreme Court has struck between the establishment clause and the free-exercise clause?
===Choices
All religious practices are prohibited in public schools.
Once a church has been recognized by... | State-sponsored prayer during school hours is prohibited, but voluntary prayer by student groups before school is allowed. | general_qa | 218 |
The following is a multiple choice question (with answers).
===Question
Two straight segments of wire $ab$ and $bc$ each carrying current $I$, are parallel as shown in fig. The cube edge is 50 cm and magnetic field is uniform along Y-axis having magnitude $0.4\ T$. If $I=3A\ $, the force experienced by wire abc in the ... | $$0.6\hat i$$ | general_qa | 264 |
The following is a multiple choice question (with answers).
===Question
In the Chinese Army, when you hear the command "Attention", how many degrees should you keep your heels together and your toes apart?
===Choices
About 100°
About 85°
About 50°
About 45°
About 60°
About 40°
About 75°
About 90°
About 70°
About 80° | About 60° | general_qa | 104 |
The following is a multiple choice question (with answers).
===Question
In a known closed basin, the multi-year average runoff depth is 500mm, and the multi-year average rainfall depth is 1000mm. What is the multi-year average value of AS ?
===Choices
1500mm
500mm
750mm
1000mm
0mm
-500mm
250mm
-1000mm | 0mm | general_qa | 103 |
The following is a multiple choice question (with answers).
===Question
Two miscible liquids A and B having vapour pressure in pure state ${P}_{A}^{o}$ and ${P}_{B}^{o}$ are mixed in mole fraction ${\chi}_{A}$ and ${\chi}_{B}$ to get a mixture having total vapour pressure of mixture ${P}_{M}$.Which of the following rea... | $$\displaystyle\frac{{\chi}_{A(l)}}{{\chi}_{A(V)}^{'}}=\frac{{P}_{M}}{{P}_{A}^{o}}$$ | general_qa | 468 |
The following is a multiple choice question (with answers).
===Question
The lyricist who played a pivotal role in the development of Ci (a form of poetry) from "shi yu" to become the representative literature of the Song Dynasty is (____)
===Choices
Wen Tingyun
Li Jing
Wei Zhuang
Su Shi
Li Bai
Li Qingzhao
Li Yu | Li Yu | general_qa | 80 |
The following is a multiple choice question (with answers).
===Question
For the 4-node rectangular element in plane, the displacement field function is ______, and the strain field function is ______.
===Choices
complete linear function - cross term function, incomplete linear function + cross term function
complete l... | complete linear function + cross term function, incomplete linear function | general_qa | 169 |
The following is a multiple choice question (with answers).
===Question
When checking skin elasticity, the commonly chosen areas are the ________ or the inner side of the upper arm.
===Choices
palm of the hand
back of the neck
top of the foot
top of the wrist
underside of the wrist
side of the neck
front of the elbow
... | back of the hand | general_qa | 91 |
The following is a multiple choice question (with answers).
===Question
The speed of the meteorite at infinity is equal to 10 km/s. What is its speed when entering the Earth's atmosphere ?
===Choices
$$\approx5 0 \mathrm{~ k m / s}$$
$$\approx3 5 \mathrm{~ k m / s}$$
$$\approx3 0 \mathrm{~ k m / s}$$
$$\approx2 5 \mat... | $$\approx1 5 \mathrm{~ k m / s}$$ | general_qa | 214 |
The following is a multiple choice question (with answers).
===Question
Two spheres are moving towards each other. Both have same radius but their masses are 2 kg and 4 kg. If the velocities are 4 m/s and 2 m/s respectively and coefficient of restitution is e = 1/3, find the maximum potential energy of deformation.
==... | 18 J | general_qa | 116 |
The following is a multiple choice question (with answers).
===Question
The temperature at a certain high altitude location is $-10^{\circ} \ \mathrm{C}$, and the partial pressure of oxygen is $5.3 \times 10^{3} \ \mathrm{Pa}$. Try to determine the altitude of this location (Hint: First find the partial pressure of oxy... | $$
\approx9 6 4 0 \ \mathrm{m}
$$ | general_qa | 278 |
The following is a multiple choice question (with answers).
===Question
When conducting microbiological tests on food, which part of shrimp is usually tested?
===Choices
Head and tail segments
Muscles within the abdominal segments
Tail muscle
Antennae and eyes
Digestive and circulatory system
Gills and appendages
Exte... | Muscles within the abdominal segments | general_qa | 83 |
The following is a multiple choice question (with answers).
===Question
An increase in consumption, investment, government spending, and exports will cause the aggregate demand curve to ( ).
===Choices
move to the upper right
shift to the left
shift unpredictably
become steeper
shift to the right
remain unchanged
move... | move to the upper right | general_qa | 84 |
The following is a multiple choice question (with answers).
===Question
When factors such as hypothermia, hypoxia, or metabolic disorders affect the activity of the Na+-K+ pump, the cellular ____.
===Choices
Absolute value of resting potential decreases, amplitude of action potential decreases
Amount of ATP produced e... | Absolute value of resting potential decreases, amplitude of action potential decreases | general_qa | 178 |
The following is a multiple choice question (with answers).
===Question
Try to compare the thermal resistance of the cylinder wall with that of a flat wall of the same material and thickness. If the temperature conditions are the same and the area of the plane is equal to the inner surface of the cylinder wall, the the... | greater | general_qa | 109 |
The following is a multiple choice question (with answers).
===Question
Each of $11$ friends begin with $10^{11}$ coins. A friend may $\textit{share}$ their coins with the rest of the group by distributing all of their coins evenly with the other $10$ friends. Each friend $\textit{shares}$ exactly once, one at a time s... | 175 | general_qa | 154 |
The following is a multiple choice question (with answers).
===Question
Calculate the pH at the stoichiometric point of the titration of 25.00 cm$^{3}$ of 0.150 M lactic acid with 0.188 M NaOH(aq).
===Choices
$$
9.00
$$
$$
6.25
$$
$$
6.50
$$
$$
7.50
$$
$$
5.75
$$
$$
8.00
$$
$$
9.50
$$
$$
8.25
$$
$$
8.50
$$
$$
7.00
$$ | $$
8.00
$$ | general_qa | 155 |
The following is a multiple choice question (with answers).
===Question
Which of the following SQL data types is best used to store the "student number" attribute?
===Choices
real
boolean
blob
timestamp
text
int
date
varchar(n)
numeric
char(n) | char(n) | general_qa | 58 |
The following is a multiple choice question (with answers).
===Question
When was the 'People's Republic of China Anti-Domestic Violence Law' implemented?
===Choices
2018
2016
2016.5
2012
2013
2017
2019
2015.5
2014
2015 | 2016 | general_qa | 88 |
The following is a multiple choice question (with answers).
===Question
How did the orchestra shift the way it used certain instrument families from the Baroque to the Classical era?
===Choices
Strings and winds were doubled on every thematic line.
Woodwinds became the prominent rhythmic support section while strings ... | Violins became the dominant string section while the lower strings became the supporting backgroun | general_qa | 95 |
The following is a multiple choice question (with answers).
===Question
The Hubei Military Government established after the Wuchang Uprising was a ().
===Choices
A bourgeois regime dominated by constitutionalists
A military dictatorship led by the Qing loyalists
A monarchy reinstated by foreign powers
An anarchist com... | A coalition of revolutionaries, constitutionalists and old bureaucrats | general_qa | 131 |
The following is a multiple choice question (with answers).
===Question
There is a circular loop (1) and a square loop (2). The diameter of the circle and the side length of the square are equal. If both carry currents of equal magnitude, what is the ratio of the magnetic field strengths at their centers $B_{1} / B_{2}... | 1.11 | general_qa | 128 |
The following is a multiple choice question (with answers).
===Question
At which of the following sites was a cloth impression discovered on a silver jar?
===Choices
Harappan
Mohenjodaro
Harappa
Dholavira
Alangirpur
Banawali
Kalibangan
Prabhas patan
Lothal
Prabhas Patan | Mohenjodaro | general_qa | 78 |
The following is a multiple choice question (with answers).
===Question
In cold chain logistics, within what range is the temperature most commonly maintained?
===Choices
-5°C to 0°C
5°C to 9°C
-30°C to -20°C
8°C to 12°C
10°C to 14°C
-15°C to -5°C
-25°C to -15°C
2°C to 6°C
-20°C to -10°C
0°C to 4°C | 0°C to 4°C | general_qa | 116 |
The following is a multiple choice question (with answers).
===Question
The presence of diffusely distributed macrophages with large numbers of ferritin-containing particles in the cytoplasm in the lungs is most common in ____.
===Choices
Left heart failure
Idiopathic Pulmonary Fibrosis
Bronchiolitis Obliterans
Acute ... | Left heart failure | general_qa | 122 |
The following is a multiple choice question (with answers).
===Question
The surface area of the metal is $A$. Work $\Phi$ is required to move a nitrogen atom from the metal surface to infinity. Helium atoms do not interact with each other; they can move freely on the two-dimensional metal surface. If the volume of heli... | $$
\frac{h} {k \sqrt{2 \pi m k}} p T^{-3 / 2} \mathrm{e x p} \Big( \frac{\Phi} {k T} \Big)
$$ | general_qa | 620 |
The following is a multiple choice question (with answers).
===Question
Where does the acute angle between the feather joint and the fault plane point to?
===Choices
The angle of the fault line
The orientation of the geological strata
The direction of the seismic waves
It cannot indicate a direction
The location of th... | The direction of movement of the footwall | general_qa | 113 |
The following is a multiple choice question (with answers).
===Question
What changes occur in gray cast iron after inoculation treatment to improve its mechanical properties?
===Choices
Reduce graphite flake size
Miniaturization of graphite flakes
Changes in matrix structure
Elimination of graphite content
Make graphi... | Miniaturization of graphite flakes | general_qa | 90 |
The following is a multiple choice question (with answers).
===Question
A saturated solution in AgA ($K_{sp}= 3\times10^{-14}$) and AgB ($K_{sp}= 1\times 10^{-14}$) has conductivity of $375\times 10^{-1} Scm^{-1}$ and limiting molar conductivity of $Ag^+$ and $A^-$ are $60 Scm^2mol^{-1}$ and $80 Scm^2mol^{-1}$ respecti... | 47.5 | general_qa | 191 |
The following is a multiple choice question (with answers).
===Question
FeO has an NaCl-type structure. Assuming the number of iron ions and oxygen ions is the same, and given that the radius of the iron ion is 0.074 nm and the radius of the oxygen ion is 0.140 nm (the relative atomic masses of Fe and O are known to be... | 0.428nm,6.085g/cm³,67.3% | general_qa | 333 |
The following is a multiple choice question (with answers).
===Question
The main performance indicators to measure the performance of reactive dyestuffs are (), diffusivity, color fixation rate, safety and so on.
===Choices
transparency
brightness
durability
conductivity
density
malleability
viscosity
flammability
odo... | solubility | general_qa | 73 |
The following is a multiple choice question (with answers).
===Question
Qian, male, 36 years old, a construction worker, suffered from a high-altitude fall resulting in paralysis and being bedridden. What should be paid attention to when moving him from the bed to the wheelchair?
===Choices
The therapist should shift ... | The operator should lift the patient's shoulder blades with both hands. | general_qa | 178 |
The following is a multiple choice question (with answers).
===Question
What are the maximum radius and minimum density of a celestial body with a mass equal to the Sun's mass $(M=2.0 \times 10^{33} \mathrm{g})$ such that light cannot escape from its surface?
===Choices
$$
\ \mathrm{1. 4 8 \times1 0^{2} m},
$$
$$
1. 4... | $$
\ \mathrm{1. 4 8 \times1 0^{3} m},
$$
$$
1. 4 7 \times1 0^{2 0} \mathrm{k g} / \mathrm{m}^{3}.
$$ | general_qa | 647 |
The following is a multiple choice question (with answers).
===Question
A population of students taking a basic genetics class had their blood types classified in the ABO blood group system. The following numbers were recorded: Phenotype Number Frequency A 249 0.2075 B 376 0.3133 AB 77 0.0642 O 498 0.4150 1,200 1.0000 ... | p=0.15, q=0.21, r=0.64 | general_qa | 384 |
The following is a multiple choice question (with answers).
===Question
Minimum distance between the parabola $4x={y}^{2}-8y+40$ and $4y={x}^{2}-8x+40$ is
===Choices
$$\sqrt{2}$$
\sqrt{8}
\sqrt{4}
$$\sqrt{10}$$
$$0$$
\sqrt{6}
$$\sqrt{3}$$
\sqrt{5}
\sqrt{7}
$$2\sqrt{2}$$ | $$\sqrt{2}$$ | general_qa | 119 |
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