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
What is one of the most important features of Bianliang in the Northern Song Dynasty in terms of the city?
===Choices
The military fortifications
The numerous temples
The extensive canal system
The open market
The advanced sewage system
The elabor... | The open market | general_qa | 87 |
The following is a multiple choice question (with answers).
===Question
$T=300 K$, $H_{2} (g) + Br_{2} (g) = 2 HBr (g)$, with the reactor volume held constant at $V=0.25 \mathrm{~dm}^{3}$. During the experiment, it was measured that after $0.01 \mathrm{~s}$ of reaction, the amount of $\mathrm{Br_{2}} (g)$ decreased by ... | $$
r=r \left( \mathrm{H}_{2} \right)=r \left( \mathrm{B r}_{2} \right), \ 2 r=r \left( \mathrm{H B r} \right)
$$ | general_qa | 632 |
The following is a multiple choice question (with answers).
===Question
What marks the beginning of pathological morphology?
===Choices
The foundation of modern medicine
The development of clinical diagnostics
The discovery of germ theory
The introduction of advanced surgery
The rise of natural sciences
The establishm... | The establishment of organ pathology | general_qa | 86 |
The following is a multiple choice question (with answers).
===Question
Two coaxial circular coils, each with a radius of $R$, carry identical currents $I$ in both magnitude and direction. The distance between them is equal to the radius $R$ (Helmholtz coils). What is the magnetic energy density at a point on the axis ... | $$
\frac{3 2} {1 2 5} \, \frac{\mu_{0} \, I^{2}} {R^{2}}
$$ | general_qa | 467 |
The following is a multiple choice question (with answers).
===Question
There is a strong typhoon with its center located at $20^\circ N$. At a location 50 km away, a pressure gradient of $50 \text{hPa}/100\text{km}$ is observed in the radial direction. Given the air density is $1.25\text{kg/m}^3$, calculate the gradie... | $43.5 \text{m/s}$ | general_qa | 209 |
The following is a multiple choice question (with answers).
===Question
Three bodies $A,\: B\: and\: C$ have equal surface area and thermal emissivities in the ratio $e_{A}:e_{B}:e_{C}=1: \displaystyle \frac {1}{2}: \displaystyle \frac {1}{4}$. All the three bodies are radiating at same rate. Their wavelengths correspo... | $$\sqrt {\lambda_{A} \lambda_{C}}=\lambda_{B}$$ | general_qa | 454 |
The following is a multiple choice question (with answers).
===Question
A certain bored pile has a diameter of 800mm, with the pile shaft extending 10m above the ground and penetrating 20m into the soil. The pile tip is embedded into relatively intact hard rock. The horizontal deformation coefficient of the pile, $\alp... | 21MPa | general_qa | 263 |
The following is a multiple choice question (with answers).
===Question
Gallium arsenide (GaAs) and gallium phosphide (GaP) are compound semiconductors that have room-temperature band gap energies of 1.42 and 2.26 eV, respectively, and form solid solutions in all proportions. The band gap of the alloy increases approxi... | 47.6mol% | general_qa | 213 |
The following is a multiple choice question (with answers).
===Question
Given that the transmitter operates at a frequency of $f = 10 \mathrm{GHz}$ with an output power of $P_{0} = 100 \mathrm{W}$, using a BJ-100 rectangular waveguide (filled with air as the dielectric, with dimensions $a \times b = 22.86 \times 10.16 ... | $$
1. 0 6 \mathrm{V} / \mathrm{m}
$$ | general_qa | 477 |
The following is a multiple choice question (with answers).
===Question
There are a number of means by which can influence _______. These include _________to decision maker, varying from very direct modes to indirect modes, _________, being either public or private and ________ of communication.
===Choices
Employees, ... | Government, Avenue of approach, Breadth of transmission, Content | general_qa | 187 |
The following is a multiple choice question (with answers).
===Question
The data link layer employs the Go-Back-$N$ protocol for flow control and error control. The sender has already transmitted frames numbered $0-6$. Upon timer expiration, only acknowledgments for frames 1, 3, and 5 have been received. The number of ... | 1 | general_qa | 105 |
The following is a multiple choice question (with answers).
===Question
What day, month, and year was the municipality of Tarazá, Antioquia, Colombia, founded?
===Choices
October 5th, 1958
November 29th, 1957
January 24th, 1955
February 24th, 1953
August 19th, 1950
November 4th, 1952
December 17th, 1959
July 12th, 195... | February 24th, 1953 | general_qa | 157 |
The following is a multiple choice question (with answers).
===Question
The current explanation for the mechanism of heat resistance in budding is the () hypothesis; in addition, it is believed that DPA-Ca, a unique isoconstituent in budding, is associated with heat resistance.
===Choices
Scheme of Temperature Defense... | Osmoregulatory expanded cortex theory | general_qa | 167 |
The following is a multiple choice question (with answers).
===Question
Should an O-negative mother receive RhIg if a
positive DAT on the newborn is caused by
immune anti-A?
===Choices
No, the baby's problem is unrelated to
Rh blood group antibodies
No, due to the baby being type AB positive
No, the mother is not a ca... | Yes, if the baby's type is Rh positive | general_qa | 169 |
The following is a multiple choice question (with answers).
===Question
An American franchise operates as an importer and distributor of bicycles manufactured by a foreign country, and maintains several warehouses for the wholesale distribution of the bicycles. A warehouse located in a county handles the distribution o... | tires only. | general_qa | 249 |
The following is a multiple choice question (with answers).
===Question
Which following heating furnaces have a movable hearth structure?
===Choices
Rotary heating furnace, cupola furnace, fluidized bed furnace
Bell furnace, box furnace, roller hearth furnace
Rotary heating furnace, cupola furnace, conveyor furnace
El... | Step heating furnace, ring heating furnace, car-type heating furnace | general_qa | 147 |
The following is a multiple choice question (with answers).
===Question
The plates of a parallel-plate capacitor are separated by a dielectric whose relative permittivity varies continuously with thickness as follows \epsilon_r= [1 / {1 - {x^2 / (3d^2)}}] Compute the capacitance.
===Choices
(7/5) {(\epsilon_va) / (2d)... | (9/8) {(\epsilon_va) / d} Farad | general_qa | 236 |
The following is a multiple choice question (with answers).
===Question
Under Chinese law, during the existence of a marriage, if a party does not file for divorce but separately files a claim for damages based on Article 46 of the Marriage Law, what actions can the People's Court take?
===Choices
Require a reconcilia... | Not accept the case. | general_qa | 126 |
The following is a multiple choice question (with answers).
===Question
In the group G = {2, 4, 6, 8) under multiplication modulo 10, the identity element is
===Choices
10
3
1
6
9
8
4
2
5
7 | 6 | general_qa | 66 |
The following is a multiple choice question (with answers).
===Question
"G22" code representation ()
===Choices
The second subcategory within the second subcategory of public facility land
The second subcategory in the second category of green spaces
The second category in green spaces
The first subcategory within the... | The second subcategory in the second category of green spaces | general_qa | 139 |
The following is a multiple choice question (with answers).
===Question
Use divergence therem to evaluate $\iint_S \vec{F} \cdot d \vec{S}$ where $\vec{F} = yx^2 \vec{i} + (xy^2 - 3z^4)\vec{j} + (x^3+y^3)\vec{k}$ and the surface $S$ consists of the sphere of radius 4 with $z \le 0$ and $y \le 0$. Note all three surface... | 0.0 | general_qa | 169 |
The following is a multiple choice question (with answers).
===Question
If a variable ellipsoidal surface
$$
\frac{x^{2}} {a^{2} k^{2} t^{4}}+k t^{2} \biggl( \frac{y^{2}} {b^{2}}+\frac{z^{2}} {c^{2}} \biggr)=1
$$
is the boundary surface of a fluid, where $k, a, b, c$ are constants, and $x, y, z$ are coordinates in the ... | $$\frac{2 x} {t}$$
$$- \frac{y} {t}$$
$$- \frac{z} {t}$$ | general_qa | 528 |
The following is a multiple choice question (with answers).
===Question
The shell plate marked 'port side E strake No.5 plate' is numbered as
===Choices
5PE
PE5
P5E
EP5 | PE5 | general_qa | 48 |
The following is a multiple choice question (with answers).
===Question
The speed $v$ of a particle moving along a straight line, when it is at a distance $(x)$ from a fixed point of the line is given by $v^{2}=108-9x^{2}$ (all quantities are in $CGS$ units):
===Choices
the motion is uniformly decelerated along the st... | the motion is simple harmonic about the given fixed point | general_qa | 200 |
The following is a multiple choice question (with answers).
===Question
On a two road a car A is travelling with a speed of v=5 $m{s^{ - 1}}$.Two car B and C approach car A in opposite direction with a speed u=10 $m{s^{ - 1}}$ each.At a certain instant when the B and C are equidistant from A each being $l$=1500 m, B de... | -0.2 $m{s^{ - 2}}$ | general_qa | 255 |
The following is a multiple choice question (with answers).
===Question
The air ducts of a certain ventilation project are made of galvanized steel plates. The size of the air duct is 630mm × 500mm, with a length of 3.2m. What is the quantity of air duct engineering?
===Choices
3.616㎡
7.810㎡
3.740㎡
8.500㎡
7.232㎡
4.020... | 7.232㎡ | general_qa | 140 |
The following is a multiple choice question (with answers).
===Question
We now define an algorithm: The definition of a(n) is the exponent sequence for a bilinear recursive sequence, starting with the initial values 3, 1, and following certain transformation rules to generate subsequent terms. Given the input x_list (a... | [300, 312, 325, 338, 351, 364, 378, 393, 406, 420] | general_qa | 620 |
The following is a multiple choice question (with answers).
===Question
What is the potential guided by a single cell?
===Choices
All-or-none action potential
Depolarization threshold potential
End-plate potential
Microphone Potential
Single-unit field potential
Excitatory postsynaptic potential
Nerve trunk action pot... | End-plate potential | general_qa | 83 |
The following is a multiple choice question (with answers).
===Question
A sample containing 1.0 mole of an ideal gas is expanded isothermally and reversibly to ten times of its original volume, in two separate experiments. The expansion is carried out at 300K and at 600K respectively. Choose the correct option(s).
===... | $ \Delta U$ = 0 in both cases. | general_qa | 264 |
The following is a multiple choice question (with answers).
===Question
When the coupled parts are subjected to lateral external forces, if a set of ordinary bolts is used, the external forces are transmitted by ( ).
===Choices
Compressive force between the mating surfaces of the connected parts
Shear of bolts and com... | Frictional force between the mating surfaces of the connected parts | general_qa | 167 |
The following is a multiple choice question (with answers).
===Question
A phenotypically normal couple has a son who is both albino and colorblind. Predict the probability of them having another abnormal offspring.
===Choices
1/4
7/16
3/4
15/16
3/8
5/8
3/16
1/16
5/16
1/2 | 7/16 | general_qa | 90 |
The following is a multiple choice question (with answers).
===Question
A square iron gate with a side length of 30 cm is hinged at point $o$ on the top. Its weight is $G = 117.7$ N. The centerline of a water jet with a diameter $d = 0.02 \mathrm{m}$ passes through the center $C$ of the gate, with a jet velocity of $v_... | $$
35.343(N)
$$ | general_qa | 252 |
The following is a multiple choice question (with answers).
===Question
A 42-year-old woman is brought to the emergency department 10 minutes after being involved in a high-speed motor vehicle collision in which she was a restrained passenger. On arrival, she has shortness of breath and abdominal pain. Her pulse is 135... | Laparotomy | general_qa | 217 |
The following is a multiple choice question (with answers).
===Question
Visual impairment is also known as().
===Choices
Entire visual handicap
Unrestricted eye disorder
Whole sight impairment
Complete eyesight loss
Absolute sight reduction
Total vision defects
All of the above
Extreme optical disruption
Full ocular d... | All of the above | general_qa | 69 |
The following is a multiple choice question (with answers).
===Question
A certain laser uses GaAs as the active medium. What are the frequency and wavelength of the light it emits?
===Choices
$$
0. 9 3 \mu\mathrm{m}
$$
$$
3. 2 1 1 \times 1 0^{1 4} \mathrm{~ H z}
$$
$$
0. 7 2 \mu\mathrm{m}
$$
$$
3. 9 6 2 \times 1 0^{1 ... | $$
0. 8 7 \mu\mathrm{m}
$$
$$
3. 4 4 5 \times1 0^{1 4} \mathrm{~ H z}
$$ | general_qa | 508 |
The following is a multiple choice question (with answers).
===Question
A hypothetical metal is known to have an electrical resistivity of $3. 3 \times1 0^{-8} (\Omega \cdot m)$ . curen of 25is passed through aspecimen of this metal 15 mm thick When a magnetic field of 0.95 tesla is simtaneously imposed in a direction ... | $$
0. 0 0 4 5 5 \ \mathrm{m}^{2} / \mathrm{V-s}
$$ | general_qa | 450 |
The following is a multiple choice question (with answers).
===Question
Which famous Chinese philosopher is associated with the development of Chinese calligraphy?
===Choices
Qin Shi Huang
Mozi
Wang
Zhuangzi
Han Fei
Laozi
Sun Tzu
Mencius
Confucius
Xunzi | Confucius | general_qa | 70 |
The following is a multiple choice question (with answers).
===Question
What are the main measurement indicators of disease burden at present?
===Choices
Morbidity, Potential Years of Life Lost (PYLL), and Health Adjusted Life Years (HALY)
Morbidity Rate, Potential Years of Life Lost (PYLL), and Disability-Adjusted Li... | Mortality Rate, Potential Years of Life Lost (PYLL), and Disability-Adjusted Life Years (DALY) | general_qa | 255 |
The following is a multiple choice question (with answers).
===Question
When calling a macro in a macro group, the syntax format for specifying the macro name is ().
===Choices
Macro Name
Macro Group Name| Macro Name
Macro Group Name. Macro Name
Macro Group Name/ Macro Name
Macro Group Name, Macro Name
[Macro Group Na... | Macro Group Name. Macro Name | general_qa | 104 |
The following is a multiple choice question (with answers).
===Question
Two particles execute SHM with amplitude A and 2A and angular frequency ${\omega}$ and ${2\omega}$ respectively. At t=0, they start with some initial phase difference. At $\displaystyle t=\frac{2\pi}{3\omega}$, they are in same phase. Their initial... | $${\displaystyle\frac{\pi}{3}}$$ | general_qa | 192 |
The following is a multiple choice question (with answers).
===Question
Assuming that at a specific price A, the demand for hot dogs is 50. If the price increases by 5% from A, the demand for hot dogs would decrease to 48. What is the price elasticity of demand for hot dogs?
===Choices
The price elasticity of demand f... | The price elasticity of demand for hot dogs in this price range is approximately 0.82. | general_qa | 263 |
The following is a multiple choice question (with answers).
===Question
() is a commonly used material for alloy spring steel.
===Choices
20CrMnTi
16Mn
45SiMn
40Cr
70SiMn2
50CrV4
60Si2Mn
30MnB5
55Cr3
65Mn | 60Si2Mn | general_qa | 86 |
The following is a multiple choice question (with answers).
===Question
The purpose of limiting the pressure
$$
p < \lfloor p \rfloor
$$
in the design of a non-liquid friction plain bearing is ().
===Choices
Preventing vibration caused by assembly errors
Prevent bearing failure due to wear.
Prevent difficulties in sta... | Prevent lubricating oil from extruding and excessive wear of the bearing bush. | general_qa | 151 |
The following is a multiple choice question (with answers).
===Question
If the change in the value of g at a heighth above the surface of earth is same as at a depth d below it, then (both d and h being much smaller than the radius of the earth).
===Choices
d=3h/4
d=h
d=4h/3
d=2h/3
d=${ h }^{ 2 }$
d=3h/5
d=3h/2
d=5h/4... | d=3.5h | general_qa | 125 |
The following is a multiple choice question (with answers).
===Question
Who invented artificial fibers in 1884?
===Choices
Heit
Renault
Lavoisier
Curie
Nobel
Pasteur
Tyro
Lumière
St. Chardon
Dupont | St. Chardon | general_qa | 62 |
The following is a multiple choice question (with answers).
===Question
Given $u(x, y) = x^3 + 6x^2y - 3xy^2 - 2y^3$, find the analytic function $f(z) = u + \mathrm{i} v$ that satisfies the condition $f(0) = 0$.
===Choices
$$
( 6+4 \mathrm{i} ) z^{5}
$$
$$
( 4-5 \mathrm{i} ) z^{6}
$$
$$
( 1-2 \mathrm{i} ) z^{3}
$$
$$
... | $$
( 1-2 \mathrm{i} ) z^{3}
$$ | general_qa | 256 |
The following is a multiple choice question (with answers).
===Question
What is usually associated with canned crab meet?
===Choices
Fermented flavor
Oily sheen
Blue discoloration
Rubbery feel
Mush
Curd
Green spotting
Stringy texture
Vinegary smell
Honeycombing | Blue discoloration | general_qa | 67 |
The following is a multiple choice question (with answers).
===Question
To make natural drying of grains effective, what is the maximum relative humidity of the ambient air?
===Choices
71%
68%
70%
74%
69%
75%
72%
60%
65%
73% | 70% | general_qa | 66 |
The following is a multiple choice question (with answers).
===Question
When the invasion depth of the invading body is (), it is called epioic facies; When the invasion depth is (), it is called mesoic facies; When the invasion depth is greater than (), it is called dplutonic facies.
===Choices
<2km, 2-10km, >10km
<3... | <3km, 3-10km, >10km | general_qa | 222 |
The following is a multiple choice question (with answers).
===Question
Arrange the following in increasing order of stability on the basis of resonance.(i) $CH_2 = CH - CH = CH - \overset{+}{CH_2}$(ii) $CH_2 = CH - \overset{+}{CH} - CH = CH_2$(iii) $CH_2 = CH - \overset{+}{CH} - \overset{-}{CH} -\overset{+}{CH_2}$(iv)... | (ii) $>$ (i) $>$ (iii) $>$ (iv) | general_qa | 324 |
The following is a multiple choice question (with answers).
===Question
If in the graph of a perfectly competitive firm, the point where MR equals MC falls on the part of the MR curve that is above the AVC curve but below the ATC curve, then: P: Price, ATC: Average Total Cost, MC: Marginal Cost, MR: Marginal Revenue, A... | At that output, the firm is not making a profit, but in the short term, the firm will continue to produce | general_qa | 308 |
The following is a multiple choice question (with answers).
===Question
What is the main gate of the Forbidden City in Beijing during the Ming and Qing Dynasties in China?
===Choices
Golden Gate
Heavenly Gate
Phoenix Gate
Imperial Gate
Jade Gate
Sunset Gate
Dragon Gate
Eternal Gate
Sunrise Gate
Noon Gate | Noon Gate | general_qa | 76 |
The following is a multiple choice question (with answers).
===Question
The half-life of $6 0 \mathrm{C o}$, which is widely used in cancer therapy, is 5.26 a. For a sample of $6 0 \mathrm{C o}$ with a radioactivity of 1.67 MBq, calculate the radioactivity of $6 0 \mathrm{C o}$ after 1.0 a to be ___.
===Choices
$1. 9 ... | $1. 4 6 \times1 0^{6} \mathrm{~ B q}$ | general_qa | 329 |
The following is a multiple choice question (with answers).
===Question
The basic production unit of railway transport is ().
===Choices
Train loading segment
Railway station section
Railway signaling area
Train dispatching line
Train operation sector
Railway maintenance zone
Railway management unit
Railway control di... | Railway station section | general_qa | 72 |
The following is a multiple choice question (with answers).
===Question
A certain 110-volt shunt generator has an armature and brush resistance of 0.06 ohm at full load of 85 amperes. The resistance of the shunt field is 45 ohms, and the stray power losses are found to be 897 watts. Calculate the full-load efficiency o... | 85.2 percent | general_qa | 145 |
The following is a multiple choice question (with answers).
===Question
In which constellation is the globular cluster M14 located?
===Choices
Sagittarius
Aquila
Scorpius
Draco
Lyra
Aquarius
Hercules
Ophiuchus
Serpens | Ophiuchus | general_qa | 64 |
The following is a multiple choice question (with answers).
===Question
Let $( M^{2}, d s^{2} )$ be a minimal surface in $\mathbb{R}^{3}$ , where $d s^{2}$ igtereticig of the Euclidean metric. Assume that the Gaussian curvature $K$ of $( M^{2}, d s^{2} )$ Hatin Daote v $\widetilde{K}$ the Gaussian curvature of the metr... | $$1$$ | general_qa | 186 |
The following is a multiple choice question (with answers).
===Question
Who suggested the idea of shooting liquid carbon dioxide into rain clouds to induce rainfall?
===Choices
Louis Gathmann
John G. Gathmann, IV
John G. Gathmann, Sr.
John G. Gathmann, III
John G. Gathmann, V
John G. Gathmann, II
John G. Gathmann
John... | Louis Gathmann | general_qa | 103 |
The following is a multiple choice question (with answers).
===Question
What is the rank of the following matrix?
$$A=\left( \begin{matrix} {{{{3}}}} & {{{{2}}}} & {{{{-1}}}} & {{{{-3}}}} & {{{{-1}}}} \\ {{{{2}}}} & {{{{-1}}}} & {{{{3}}}} & {{{{1}}}} & {{{{-3}}}} \\ {{{{7}}}} & {{{{0}}}} & {{{{5}}}} & {{{{-1}}}} & {{{{... | $$
R ( A )=3
$$ | general_qa | 246 |
The following is a multiple choice question (with answers).
===Question
Under Chinese law, According to the principle of public trust, which of the following statements about the change of property rights is correct?
===Choices
The registrant of immovable property enjoys the property rights registered under their name... | The registrant of immovable property enjoys the property rights registered under their name. | general_qa | 222 |
The following is a multiple choice question (with answers).
===Question
The Born Haber cycle below represents the energy changes occurring at 298K when $KH$ is formed from its elementsv : ${ \Delta H }_{ atomisation }$ $K = 90 kJ/mol$w : ${ \Delta H }_{ ionisation }$ $K = 418 kJ/mol$x : ${ \Delta H }_{ dissociation }$ ... | -124 kJ/mol | general_qa | 243 |
The following is a multiple choice question (with answers).
===Question
As per National Trust Act, patients suffering from which of the following disease are eligible for disability benefit?
===Choices
Learning disability
Mental retardation
Severe mental retardation
Severe learning disability
Cognitive impairment
Auti... | Mental retardation | general_qa | 76 |
The following is a multiple choice question (with answers).
===Question
When, in 1943, the government ordered NBC to divest itself of one of its networks, it sold NBC Blue to Edward Noble, who renamed it().
===Choices
AMC
CBN
EBC
PBS
PBC
NBC
ABC
NBS
RNC
CBS | ABC | general_qa | 78 |
The following is a multiple choice question (with answers).
===Question
Which of the following skin conditions can be effectively treated using Intense Pulsed Light (IPL) technology?
===Choices
Stretch marks
Lipomas
Melasma
Freckles
Psoriasis
Scar tissue
Wrinkles
Age spots
Eczema
Unwanted hair | Unwanted hair | general_qa | 74 |
The following is a multiple choice question (with answers).
===Question
A motorist travelling at $54\ km/hr$ when he observes a traffic signal at a distance of $280\ m$ ahead turning red at time $t=0$. If he decides to decelerate & then accelerates by the same magnitude, so as to pass the signal at $54\ km/hr$ at $t=28... | Minimum speed reached is $10\ m/s$ | general_qa | 230 |
The following is a multiple choice question (with answers).
===Question
A cryptographic hash function takes an arbitrary block of data and returns ______.
===Choices
shortened size byte string
variable sized byte string
variable size bit string
same size bit string
limited size byte string
encrypted size bit string
co... | fixed size bit string | general_qa | 87 |
The following is a multiple choice question (with answers).
===Question
An object is tied to a string and rotated in vertical circle of radius $'r' .$ If $\dfrac { T _ { \operatorname { Max } } } { T _ { \operatorname { Min } } } = 2$ and constant speed $^ { \prime }\mathrm { V } ^ { \prime }$ is maintained along ... | $$1$$ | general_qa | 169 |
The following is a multiple choice question (with answers).
===Question
A uniform chain is hung on a frictionless nail, the chain is 18m long, the movement begins with the chain hanging down 8m on one side and 10m on the other side. How long does it take the whole chain to slide through the nail?
===Choices
$$ {\frac{... | $$ {\frac{3} {\sqrt{g}}} \operatorname{l n} \left( 9+\sqrt{8 0} \right) $$ | general_qa | 383 |
The following is a multiple choice question (with answers).
===Question
The area of the plane figure enclosed by $\left(x^2+y^2\right)^2=8x^2$ is ( ).
===Choices
$7\pi$
$3\pi$
$5\pi$
$\pi$
$9\pi$
$2\pi$
$8\pi$
$4\pi$
$10\pi$
$6\pi$ | $4\pi$ | general_qa | 95 |
The following is a multiple choice question (with answers).
===Question
At 298 K, a certain conductivity cell is filled with a $c(KCl) = 0.100 \, \mathrm{mol} \cdot \mathrm{dm}^{-3}$ KCl aqueous solution ($\kappa(KCl) = 1.289 \, \Omega^{-1} \cdot \mathrm{m}^{-1}$), and its resistance is measured to be $R(KCl) = 23.78 \... | $0.08246, 1.79 \times 10^{-5}$ | general_qa | 616 |
The following is a multiple choice question (with answers).
===Question
Which of the following situations results in reduced ADH release?
===Choices
Decreased colloidal osmotic pressure in plasma
Atrial and caval vein dilation
Plasma crystal osmotic pressure increases
Intravascular volume expansion
The human body tran... | Atrial and caval vein dilation | general_qa | 113 |
The following is a multiple choice question (with answers).
===Question
Who is the actor that plays Yin Dingqiang in the TV series 'Happiness Must Be Strong'?
===Choices
Liu Mingdao
Liu Kaiwei
Chen Kun
Liu Dao
Wang Kai
Ming Dao
Liu Kai
Liu Ming
Wang Ming
Wang Dao | Ming Dao | general_qa | 80 |
The following is a multiple choice question (with answers).
===Question
According to the characteristics of the components of the question, "How to cultivate students' sense of responsibility" belongs to __.
===Choices
poorly structured questions
result-oriented inquiries
open-ended problems
general questions
well-str... | poorly structured questions | general_qa | 86 |
The following is a multiple choice question (with answers).
===Question
A single-phase voltage regulation device is described, with an input power supply of single-phase industrial frequency $220 \mathrm{V}$ and a load that comprises a series of resistive and inductive components, where $R=1 \Omega$ and $L=2 \mathrm{mH... | $$43.6A,120°,0.522$$ | general_qa | 367 |
The following is a multiple choice question (with answers).
===Question
The wall is a vertically smooth retaining wall, 6m high, with a horizontal fill surface. On top of it, there is a vertical uniform load $q=20 \, \text{kN/m}^2$, with fill having properties $\gamma=18 \, \text{kN/m}^3, \; c=16 \, \text{kPa}, \; \var... | $$
1. 5 2 \mathrm{m}
$$ | general_qa | 268 |
The following is a multiple choice question (with answers).
===Question
Arrange the following according to their year of foundation:
(a)China Academic Library and Information System(CALIS)
(b)Australian Academic & Research Library Network (AARLN)
(c)Research Libraries Group(RLG)
(d)Online Computer Library Centre (OCLC)... | (d),(c),(a),(b) | general_qa | 151 |
The following is a multiple choice question (with answers).
===Question
Let the quadratic form \( f(x_1,x_2,x_3) = ax_2^2 -4x_1x_2+2bx_1x_3+ 4x_2x_3 \) (where \( a \) and \( b \) are integers), the sum of the eigenvalues of the matrix of the quadratic form is 3, and the product of the eigenvalues is 5, then its standar... | \( f = - y_1^2 - y_2^2 + 5y_3^2 \) | general_qa | 354 |
The following is a multiple choice question (with answers).
===Question
The goal of the transformation of government functions in Chinese is?
===Choices
Macro regulation, market facilitation, social assistance, public services
Macro control, micro revitalization, social management, public services
Economic regulation,... | Economic regulation, market supervision, social management, public services | general_qa | 157 |
The following is a multiple choice question (with answers).
===Question
The data model is composed of three parts: (), (), and ().
===Choices
Data types, data operations, integrity constraints
Data structures, data types, integrity constraints
Data structure, data operation, data backup
Data encoding, data manipulatio... | Data structure; Data operation; Integrity constraint | general_qa | 120 |
The following is a multiple choice question (with answers).
===Question
Which one belongs to the defensive function of Qi?
===Choices
Expelling evil spirits from the body
Promoting healthy growth of hair and nails
Maintaining the stability of body temperature
Regulating the rate of cellular respiration
Balancing the a... | Expelling evil spirits from the body | general_qa | 108 |
The following is a multiple choice question (with answers).
===Question
Pressure of $10$ moles of an ideal gas is changed from $2\ atm$ to $1\ atm$ against constant external pressure without change in temperature. If surrounding temperature ($300\ K$) and pressure ($1\ atm$) always remains constant then calculate total... | $$16J/K$$ | general_qa | 174 |
The following is a multiple choice question (with answers).
===Question
Gram stain reaction of Actinomyces: Except for the ________ which is Gram-negative, all others are Gram-positive.
===Choices
genus Escherichia
genus Klebsiella
genus Bacillus
genus Pseudomonas
genus Lactobacillus
genus Mycobacterium
genus Streptoc... | genus Nocardia | general_qa | 110 |
The following is a multiple choice question (with answers).
===Question
Xian Xinghai's _______ composed in Paris is one of the earliest modern Chinese orchestral works performed abroad.
===Choices
Concerto for Orchestra
Symphony in C major
Overture in E minor
Symphony for Winds
Sonata in D minor
Rhapsody for Piano
Sui... | Sonata in D minor | general_qa | 99 |
The following is a multiple choice question (with answers).
===Question
A certain foundation pit is 30 meters long and 20 meters wide. From 0 to 15 meters in the site is a sand layer, with a permeability coefficient of 0.9 meters per day. The groundwater table is 2.0 meters deep, and it is required that the water level... | 245 | general_qa | 219 |
The following is a multiple choice question (with answers).
===Question
Determine the smallest positive integer $y$ such that for any polynomial $t(x)$ with integer coefficients and any integer $k$, the value \[ t^{(y)}(k) = \left. \frac{d^y}{dx^y} t(x) \right|_{x=k} \] (the $y$-th derivative of $t(x)$ evaluated at $k$... | 8 | general_qa | 134 |
The following is a multiple choice question (with answers).
===Question
An eye diagram is the best method to observe ______ of received signal using an oscilloscope, especially for bipolar binary signals, under interference conditions, the "eye" _______indicates the strength of the interference.
===Choices
Composition... | Quality, degree of opening | general_qa | 126 |
The following is a multiple choice question (with answers).
===Question
When the function $M(x, y) =$ ________, the equation $M(x, y) dx + x \sin y dy = 0$ becomes an exact equation.
===Choices
$\varphi( x ) = \cos y$, where $\varphi( x )$ is any arbitrary continuously differentiable function
$\varphi( x ) = e^y$, whe... | $\varphi( x ) = \cos y$, where $\varphi( x )$ is any arbitrary continuously differentiable function | general_qa | 294 |
The following is a multiple choice question (with answers).
===Question
A screen is placed at a distance from two images of an illuminated slit. Distance of a point on the screen from two images are $ 1.8 \times 10^{-5} m $ and $ 1.23 \times 10^{-5} $ m. If $ \lambda = 6000 $ $ A^0 $. the number of the bright or da... | $ 10^{th} $ bright | general_qa | 189 |
The following is a multiple choice question (with answers).
===Question
The time complexity of finding an element in an ordered list is ( ).
===Choices
$O(n^2)$
$O(n + \log n)$
$O(n^3)$
$O(n \log n)$
$O(n!)$
$O(\
$O(n \cdot \log \log n)$
$O(\sqrt{n})$
$Omega(n)$
$O(2^n)$ | $Omega(n)$ | general_qa | 102 |
The following is a multiple choice question (with answers).
===Question
What are effective soil cultivation measures for controlling perennial weeds that propagate through underground root buds?
===Choices
Pruning
Irrigating
Rototilling
Plowing
Mulching
Mowing
Aerating
Fertilizing
Planting
Harvesting | Plowing | general_qa | 69 |
The following is a multiple choice question (with answers).
===Question
What is the difference between a double block and a single block in volleyball?
===Choices
Adjust body position according to net height
Positioning closer to the net vertically
Extend one hand over the net tightly
The Distance Between People and t... | Emphasize cooperation between two people | general_qa | 114 |
The following is a multiple choice question (with answers).
===Question
A company leased a set of equipment from a leasing company on January 1, 20×6, with a value of 1,000,000 yuan, for a lease term of 10 years. The estimated residual value at the end of the lease term is 50,000 yuan, which will belong to the lessee. ... | 158,000 yuan | general_qa | 223 |
The following is a multiple choice question (with answers).
===Question
Assume the modulating wave is a sine wave with a frequency of $500 \mathrm{Hz}$, an amplitude of 5V, and an initial phase of 0. The carrier frequency is 10kHz with an amplitude of 50V. The expression of the amplitude-modulated wave is ().
===Choic... | $$
\Phi_{\mathrm{t}}=5 0+[ 1+5 \operatorname{s i n} 1 0 0 0 \ \pi\ \mathrm{t} ] 5 0 \operatorname{s i n} 2 0 0 0 0 \ \pi\ \mathrm{t}
$$ | general_qa | 836 |
The following is a multiple choice question (with answers).
===Question
What is the lifetime of the triatomic hydrogen molecule in the excited state 2p2A2'?
===Choices
700 milliseconds
70 nanoseconds
700 microseconds
700 picoseconds
70000 nanoseconds
700 femtoseconds
7000 nanoseconds
7000 picoseconds
70000 picoseconds... | 700 nanoseconds | general_qa | 102 |
The following is a multiple choice question (with answers).
===Question
A bipolar amplifier has a relationship of ${\frac{f_{p 2}} {f_{p 1}}}=10$, with the dominant pole frequency at 1MHz and a low-frequency gain of $K(0)$. When a negative feedback is applied with $K(0)k_{f}=0.8$, calculate the two new poles of the fee... | $$
=-1 2. 6 \times1 0^{6} \operatorname{or}-5 6. 6 \times1 0^{6} \operatorname{rad} / {\operatorname{s}}
$$ | general_qa | 605 |
The following is a multiple choice question (with answers).
===Question
A parallel plate capacitor is known to have a plate area of (S), and the distance between the two plates is (d) ((d) is much smaller than the linear dimension of the plate), filled with air. When the two plates carry charges (pm Q), the magnitude o... | (Large{frac{Q^2}{2varepsilon _0S}}) | general_qa | 264 |
The following is a multiple choice question (with answers).
===Question
A wheel of radius 0.4 m can rotate freely about its axis as shown in the figure. A string is wrapped over its rim and a mass of 4 kg is hung. An angular acceleration of 8 rad $-s^{-2}$ is produced in it due to the torque. Then, moment of inerti... | $$2 kg -m^{2}$$ | general_qa | 224 |
The following is a multiple choice question (with answers).
===Question
What is the relationship in turbulent rough pipes?
===Choices
The sticky bottom layer covers a rough raised height
The drag coefficient depends only on the Reynolds number
The drag coefficient λ is independent of relative roughness
The head loss i... | The head loss is directly proportional to the square of the average flow velocity at the cross-section | general_qa | 172 |
The following is a multiple choice question (with answers).
===Question
A 32-year-woman is admitted to the emergency department as a rape case. Fluids from her vagina are collected for DNA and fructose examination. Which of the following male organs is responsible for fructose production?
===Choices
Testis
Prostate gl... | Seminal vesicles | general_qa | 82 |
The following is a multiple choice question (with answers).
===Question
Among the following electrode pairs, the one with the highest standard electrode potential φθ is ( )
===Choices
φθ(Ag2S / Ag)
φθ(AgI / Ag)
φθ(AgF / Ag)
φθ(Ag2O / Ag)
φθ(Ag+ / Ag)
φθ(Ag3PO4 / Ag)
φθ(Ag2SO4 / Ag)
φθ(AgBr / Ag)
φθ(AgCl / Ag)
φθ(AgNO3... | φθ(Ag+ / Ag) | general_qa | 123 |
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