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 the machining sequence, 1000 balls (each with a mass of 1g) are placed in a horizontal square trough with a side length of $L=2$ m and are given a translational kinetic energy of 100 J. The balls move in a chaotic manner. The collisions between ... | 50N | general_qa | 150 |
The following is a multiple choice question (with answers).
===Question
Which publishing house first published Ani Babu's debut novel 'Narcissus'?
===Choices
Nanjing Publishing Company
Nanhai Publishing Co.
Nanhai Publishing Ltd.
Nanhai Publishing & Media
Nanhai Publishing House
Nanjing Publishing House
Nanhai Publish... | Nanhai Publishing Company | general_qa | 96 |
The following is a multiple choice question (with answers).
===Question
According to the law of the meridians, what is the upper part of the Shaoyang meridian?
===Choices
The head Shaoyin meridian
The foot Shaoyin meridian
The arm Taiyang meridian
The hand Taiyin meridian
The head Taiyin meridian
The leg Taiyang merid... | The hand Jueyin meridian | general_qa | 117 |
The following is a multiple choice question (with answers).
===Question
The pre-competition state refers to a series of ( ) changes in certain systems of the body that occur before a competition or training.
===Choices
Natural conditional reflex
Unconditioned reflex
Biological conditional reflex
Artificial physiologic... | Natural conditional reflex | general_qa | 82 |
The following is a multiple choice question (with answers).
===Question
At 20°C and 101.3 kPa, a mixture of CO₂ and air slowly flows over a Na₂CO₃ solution. Air is insoluble in the Na₂CO₃ solution. CO₂ diffuses through a stationary air layer with a thickness of 1 mm into the Na₂CO₃ solution. The mole fraction of CO₂ in... | $1.7\times10^{-4}$kmol$\cdot\mathrm{m}^-2\cdot\mathrm{s}^{-1}$ | general_qa | 489 |
The following is a multiple choice question (with answers).
===Question
The anther wall consists of four layers from the outside to the inside. What are their correct names and arrangement?
===Choices
Epidermis - Middle Layer - Drug Chamber Inner Wall - Fiber Layer
Epidermis - Middle Layer - Drug Chamber Inner Wall - ... | Epidermis - one-chambered internal wall - middle layer - endothelium layer | general_qa | 209 |
The following is a multiple choice question (with answers).
===Question
A flywheel with a diameter of 50 cm is mounted on a shaft with a diameter of 60 mm, and the flywheel rotates at a speed of 180 r/min. It is known that the flywheel stops after making 90 revolutions once the machine is turned off. Assume that the ma... | $$0. 0 7$$ | general_qa | 209 |
The following is a multiple choice question (with answers).
===Question
Which of the following relationships is not true?
===Choices
average kinetic energy of gas $= \dfrac {3}{4}kT$
average kinetic energy of gas $= \dfrac {5}{6}kT$
most probable velocity $= \sqrt {\dfrac {2RT}{M}}$
compressibility factor $Z = \dfrac ... | average kinetic energy of gas $= \dfrac {1}{2}kT$ | general_qa | 199 |
The following is a multiple choice question (with answers).
===Question
Proposed guideline values for Radioactivity in Drinking water is
===Choices
Gross a activity 1.0 Bq/L and Gross b activity 0.5 Bq/L
Gross a activity 0.5 Bq/L and Gross b activity 1.0 Bq/L
Gross a activity 10 Bq/L and Gross b activity 1.0 Bq/L
Gros... | Gross a activity 0.1 Bq/L and Gross b activity 1.0 Bq/L | general_qa | 258 |
The following is a multiple choice question (with answers).
===Question
Let $P(x)=x^3-2x+3$ and $Q(x)=x^7-6x^5+9x^4+12x^3-36x^2+17x+36$ . Let $z$ be a randomly selected root of $P(x)$ . Compute the expected value of $Q(z)$ .
===Choices
6
10
9
7.4
8
7.5
7.6
7.8
7
7.2 | 8 | general_qa | 125 |
The following is a multiple choice question (with answers).
===Question
A culvert under a circular road is 30 meters long, with a slope of 0.003 and a flow rate of 4.3 cubic meters per second. If the maximum allowable water depth above the culvert is 3.6 meters, what size corrugated pipe should be selected? (Given: $n=... | $$
1. 2 \mathrm{m}
$$ | general_qa | 255 |
The following is a multiple choice question (with answers).
===Question
A 2 kg block situated on a smooth fixed incline is connected to a spring of negligible mass, with spring constant $K= 500 Nm^{-1}$, via frictionless pulley. The block is released. The distance travelled by the block before coming to rest is (Assume... | $$1 cm$$ | general_qa | 136 |
The following is a multiple choice question (with answers).
===Question
A 16-year-old high school student, whose prenatal course you have managed, delivers a 3256-g (7-lb 3-oz) baby girl during the night with the assistance of your associate. On morning rounds you note that the delivery records report that she had mild... | Provide education for well-baby care | general_qa | 253 |
The following is a multiple choice question (with answers).
===Question
Which type of anti allergic drug does Chlorpheniramine Maleate belong to?
===Choices
Ethylenediamine class
Propylamine assembly
Propenamine collection
Amino ethers
Propamine class
Propadiene cluster
Propenoic acid category
Propanol compound group
... | Propamine class | general_qa | 84 |
The following is a multiple choice question (with answers).
===Question
Given that the spacing between vibrational energy levels of the HCl molecule is 0.36 eV, calculate the effective force constant in N/m.
===Choices
350.0
520.0
550.0
200.0
450.0
575.0
300.0
420.0
490.0
600.0 | 490.0 | general_qa | 108 |
The following is a multiple choice question (with answers).
===Question
Taking into account both lighting and insulation, when designing a single roof solar greenhouse, the higher the latitude, ( ).
===Choices
Greenhouse width adjustment impacts insulation only.
Greenhouse width should be greatly increased.
Width shou... | The span of the greenhouse should be as small as possible. | general_qa | 130 |
The following is a multiple choice question (with answers).
===Question
A long plank of mass 5m is placed on a rough horizontal surface of $\mu =0.3.$ block of mass m is placed on the surface of the plank for which $\mu =0.2.$ The block is connected to a fixed point by a light inextensible string which is parallel to t... | 1.5 mg | general_qa | 145 |
The following is a multiple choice question (with answers).
===Question
$Ca{CO}_{3(s)}\rightarrow Ca{O}_{(s)}+{CO}_{2(g)}$ $\Delta H=+180KJ$If entropies of limestone, lime and carbon dioxide are $93,39$ and $213J/mol/K$. Then $\Delta {S}_{total}$ in ${JK}^{-1}$ at $300K$ is:
===Choices
$$-441$$
$$169$$
$$139$$
$$179$$... | $$159$$ | general_qa | 154 |
The following is a multiple choice question (with answers).
===Question
In all cycles where the highest temperature is the same as the lowest temperature, the thermal efficiency of cycle () is the highest.
===Choices
Periodic
Continuous
Equilibrium
Unchanging
Adiabatic
Reversible
Single-phase
Isothermal
Constant
Nonre... | Reversible | general_qa | 72 |
The following is a multiple choice question (with answers).
===Question
Two identical thin isosceles prism of refracting angle $A$ and refractive index $\mu $ are placed with their base touching each other and this system can collectively act as a crude converging lens. A parallel beam of light is incident on this syst... | $$f=\dfrac{h}{(2u -1)A}$$ | general_qa | 230 |
The following is a multiple choice question (with answers).
===Question
Rapids is a strong and narrow band of airflow, rapids center maximum wind speed in the upper troposphere must be greater than or equal to _______.
===Choices
45m/s
50m/s
75m/s
65m/s
60m/s
25m/s
35m/s
30m/s
70m/s
20m/s | 30m/s | general_qa | 99 |
The following is a multiple choice question (with answers).
===Question
The acceleration vector along x-axis of a particle having initial velocity ${v_0}$ changes with distance x as $a = \sqrt x $.The distance covered by the particles, When its speed becomes twice that of initial speed is:-
===Choices
$${\left( {\fra... | $${\left( {\frac{2}{3}{v_0}} \right)^{4/3}}$$ | general_qa | 309 |
The following is a multiple choice question (with answers).
===Question
Assuming you have a network plan, a task on the critical path in this plan can be completed within two weeks by crashing, and this task is indeed completed within two weeks, which of the following is correct?
===Choices
A new critical path may app... | All of the above may occur | general_qa | 228 |
The following is a multiple choice question (with answers).
===Question
Derive an expression for the ratio of solubilities of AgCl at two different temperatures; assume that the standard enthalpy of solution of AgCl is independent of temperature in the range of interest.
===Choices
$$
\frac{S^{\prime}} {S}=\mathrm{e}^... | $$
\frac{S^{\prime}} {S}=\mathrm{e}^{\frac{\Delta_s H^{\ominus }} {2 R} \left( \frac{1} {T} - \frac{1} {T^{'}} \right)}
$$ | general_qa | 639 |
The following is a multiple choice question (with answers).
===Question
The maximum K.E found in alpha particle of natural origin is $7.7$ MeV. Find the closest distance of approach for the gold nucleus $(Z = 79$ for gold$)$[Note : At closest distance of approach, kinetic energy is converted into potential energy]
===... | $3 \times 10^{-12}$ m | general_qa | 162 |
The following is a multiple choice question (with answers).
===Question
Which professor from Harvard University in the United States was the first to propose research on environmental issues in public administration?
===Choices
Weber
Drucker
Gulick
Riggs
Gauss
Simon
Barnard
Fayol
Mayo
Taylor | Gauss | general_qa | 69 |
The following is a multiple choice question (with answers).
===Question
The walkway to the front of Euler Elementary School is a $6 \times 15$ grid. ACME Sidewalk company has been chartered to tile it with $15$ non-overlapping $2 \times 3$ concrete slabs. Compute the number of tilings ACME can choose from for this task... | 28 | general_qa | 115 |
The following is a multiple choice question (with answers).
===Question
Portrait bricks and portrait stones are another form of ( ).
===Choices
pottery
mosaics
photography
metalwork
sculpture
engraving
painting
weaving
etching
carving | painting | general_qa | 60 |
The following is a multiple choice question (with answers).
===Question
The standard cell potential for the cell $Pt| Hg(l) | Hg_2Cl_2(s) KCl_{(0.1M)} || Zn Cl_2(0.1 M) | Zn (s)$
[Given $E^0_{Zn^{2+/Zn}}= -0.76 V$ and $E^0_{Cr^-|Hg_2Cl_2|Hg} = 0.34 V]$ is
===Choices
$$-1.11 V$$
$$-0.89 V$$
$$-1.15 V$$
$$-0.85 V$$
$$-1... | $$-1.10 V$$ | general_qa | 209 |
The following is a multiple choice question (with answers).
===Question
Under which of the following conditions is it beneficial to cultivate cherry tomatoes for increased yield?
===Choices
Reduce the temperature difference between day and night, and extend the duration of sunlight.
Reduce the day-night temperature di... | Increase the day-night temperature difference and extend the duration of light exposure. | general_qa | 176 |
The following is a multiple choice question (with answers).
===Question
On Sunday, Xiao Li spent a whole day going shopping and bought a piece of clothing for 100 yuan, and also bought buns for 5 yuan for lunch. What is the opportunity cost of Xiao Li buying this piece of clothing?
===Choices
100 yuan plus the cost of... | 100 yuan plus the value of one day's time | general_qa | 158 |
The following is a multiple choice question (with answers).
===Question
Areca nut liver is caused by ____.
===Choices
autoimmune liver condition
hepatic hydropic degeneration
post-necrotic cirrhosis
alcoholic liver disease
biliary obstruction syndrome
congenital hepatic fibrosis
viral hepatitis infection
portal cirrho... | chronic passive congestion of the liver | general_qa | 88 |
The following is a multiple choice question (with answers).
===Question
Who led the establishment of the Prague School?
===Choices
R. Jakobson (Roman Jakobson) and V. Mathesius (Vilem Mathesius)
R. Jakobson (Roman Jakobson) and V. Mathesius (Vilem Mathesius) and N. Trubetzkoy (Nikolai Trubetzkoy)
R. Jakobson (Roman Ja... | V. Mathesius (Vilem Mathesius) | general_qa | 298 |
The following is a multiple choice question (with answers).
===Question
An inclined plane making an angle ${ 30 }^{ o }$ with the horizontal is placed in a uniform horizontal electric field of $100 V { m }^{ -1 }$. A particle of mass $1 kg$ and charge $0.01 C$ is allowed to slide down from rest from the top of the incl... | $$1.150 m$$ | general_qa | 220 |
The following is a multiple choice question (with answers).
===Question
What did the artist Lygia Pape initially study in university?
===Choices
Psychology
Art
Political Science
Theology
Sociology
Art History
Anthropology
History
Literature
Philosophy | Philosophy | general_qa | 60 |
The following is a multiple choice question (with answers).
===Question
Moderate carbon monoxide poisoning, the blood carboxyhemoglobin concentration is approximately __.
===Choices
40%-60%
35%-55%
10%-30%
25%-45%
15%-35%
20%-40%
10%-25%
5%-10%
50%-70%
30%-50% | 30%-50% | general_qa | 95 |
The following is a multiple choice question (with answers).
===Question
Show how to approximate the required work by a Riemann sum. Then express the work as an integral and evaluate it. A leaky 10-kg bucket is lifted from the ground to a height of $12 \mathrm{~m}$ at a constant speed with a rope that weighs $0.8 \mathr... | 3857 $\mathrm{J}$ | general_qa | 239 |
The following is a multiple choice question (with answers).
===Question
In the study of the relationship between uterine prolapse and postpartum labor participation, which is the dependent variable?
===Choices
Maternal Health
Infant Health
Labor Duration
Women's Activity
Uterine Prolapse
Postpartum Participation in La... | Uterine Prolapse | general_qa | 87 |
The following is a multiple choice question (with answers).
===Question
An organic compound contains $C, H$ and $O$. If $C$ (%) $:$ $H$(%) = $6:1$, what is the simplest formula of the compound, given that one mole of the compound contains half as much oxygen as would be required to burn all the $C$ and $H$ atoms in it ... | $$CH_2O$$ | general_qa | 186 |
The following is a multiple choice question (with answers).
===Question
Two point charges $q_{1}= 1.5\times 10^{8}$ C and $q_{2}= 3.0\times 10^{8}$ C are separated by a distance of $r_{1}= 42$ cm. If the distance is to be changed to $r_{2}= 25$ cm, what is the work done by the external force?
===Choices
$-5.32\times10... | $6.55\times10^{-6} J$ | general_qa | 246 |
The following is a multiple choice question (with answers).
===Question
What is the simplest equipment used for air saturation?
===Choices
Mixing Tank
Cooling Tube
Heating Rod
Chamber
Insulated Chamber
Pipe
Passive Filter
Condenser Unit
Vessel
Pressure Valve | Insulated Chamber | general_qa | 61 |
The following is a multiple choice question (with answers).
===Question
A sculptor agreed to create a sculpture for an art collector. The parties reduced their agreement to a completely integrated written contract that specified that the collector would pay the sculptor $10,000 for the sculpture. Upon completion and de... | No, because the email exchange occurred after the parties signed the written contract. | general_qa | 323 |
The following is a multiple choice question (with answers).
===Question
Which model of V-belt has the smallest cross-sectional size?
===Choices
U-type
V-type
B-type
A-type
Y-type
Z-type
X-type
W-type
T-type
S-type | Y-type | general_qa | 59 |
The following is a multiple choice question (with answers).
===Question
What is the mechanism behind the rapid and transient increase in vascular wall permeability during acute reactions?
===Choices
Endothelial cell expansion in fine veins
Damage to the small arterial endothelium
Tight junction dissolution in arteries... | Endothelial cell contraction in fine veins | general_qa | 119 |
The following is a multiple choice question (with answers).
===Question
One end of a light spring of natural length $d$ and spring constant $k(=mg/d)$ is fixed on a rigid support and the other end is fixed to a smooth ring of mass $m$ which can slide without frcition on a vertical rod fixed at a distance $d$ from the s... | $$\dfrac{\sqrt {gb}}{4}$$ | general_qa | 250 |
The following is a multiple choice question (with answers).
===Question
A rectangular loop PQRS, is being pulled with constant speed into a uniform transverse magnetic fieldby a force F (as shown). E.m.f. induced in side PS and potential difference between points P and S respectively are (Resistance of the loop = r)
=... | $$Zero , \displaystyle \frac {Fr} {6 B \ell} $$ | general_qa | 260 |
The following is a multiple choice question (with answers).
===Question
Velocity of a particle moving in a circular in a curvilinear path varies with time as $\overrightarrow{V} =(2t \hat{i} + t^{2}\hat {j}) m/s$. Then $t$ is in $sec$.At $ t= 1\ sec$
===Choices
Tangential acceleration of particle is $\dfrac {6}{\sqrt... | Radius of curvature to the paths is $\dfrac{5\sqrt5}{2}m$ | general_qa | 275 |
The following is a multiple choice question (with answers).
===Question
Given the following testcross data for corn in which the genesfor fine stripe (f), bronzealeurone(bz) and knotted leaf(Kn) are involved: Phenotype Number Kn + + 451 Kn f + 134 + + + 97 + fbz 436 Kn +bz 18 + +bz 119 + f + 24 Kn fbz 86 Total 1,365 (a... | The correct sequence of the three genes is Knbzf or fbzKn, the amount of recombination for Region I is 21.6%, for Region II is 16.5%, and the total recombination between f and Kn is 38.1%, and the coefficient of coincidence (c.c.) is .86 | general_qa | 811 |
The following is a multiple choice question (with answers).
===Question
Diamond is a crystalline structure of carbon with a lattice constant of $a = 0.357$ nm. When it transforms into graphite (with a density of $2.25 \text{ g/cm}^3$), what is the change in its volume?
===Choices
Compression 8 2.6%
Expansion 3 7.5%
Ex... | Inflation 5 5.8% | general_qa | 164 |
The following is a multiple choice question (with answers).
===Question
The frequency shift produced by the normal Zeeman effect in the center of a sunspot that has a magnetic field strength of 0.3 T is().
===Choices
$$
6. 4 \times1 0^{9} \mathrm{~ H z}
$$
$$
4. 2 \times1 0^{9} \mathrm{~ H z}
$$
$$
8. 6 \times1 0^{8} ... | $$
4. 2 \times1 0^{9} \mathrm{~ H z}
$$ | general_qa | 278 |
The following is a multiple choice question (with answers).
===Question
There are four symbols, with the probabilities of the first three symbols appearing being 1/4, 1/8, and 1/8, respectively, and the appearance of each symbol is relatively independent. Calculate the average amount of information for this set of symb... | $1. 7.5 bit/symbol$ | general_qa | 164 |
The following is a multiple choice question (with answers).
===Question
The human haploid genome refers to all the genetic information present on how many chromosomes?
===Choices
21 autosomes + X + Y
22 autosomes + Y chromosome
24 Chromosome Sets
22 autosomes
20 Autosomes
23 autosomes
22 autosomes + X + Z
22 autosomes... | 22 autosomes + X + Y | general_qa | 106 |
The following is a multiple choice question (with answers).
===Question
Which of the following elements is least abundant in the Earth's crust?
===Choices
Nitrogen
Helium
Boron
Argon
Deuterium
Hydrogen
Lithium
Krypton
Xenon
Neon | Helium | general_qa | 64 |
The following is a multiple choice question (with answers).
===Question
Plastocyanin is synthesized in the cytoplasm and then transported to the thylakoid lumen within the chloroplast to perform its electron transfer function. How many transit peptides does the plastocyanin precursor synthesized in the cytoplasm contai... | 2 unit | general_qa | 99 |
The following is a multiple choice question (with answers).
===Question
Accurately weigh 3.4 mg of pure proteolytic enzyme (with esterase activity) and treat it with an excess of diisopropyl fluorophosphate $^{-32}P(1 \mu\mathrm{~ C_{ i} / \mu\mathrm{m o l} ~}$). After 24 hours, add $KOH$ to the solution to decompose t... | 46800 | general_qa | 298 |
The following is a multiple choice question (with answers).
===Question
Who said, 'Gunpowder blew the chivalry to atoms, the compass opened up the world market and established colonies, and the printing press became the tool of the Reformation, in general, the means of the scientific renaissance, the most powerful leve... | Marx | general_qa | 95 |
The following is a multiple choice question (with answers).
===Question
Solve the integral:
$$
\int \frac{ 1 }{ \sin(8 \cdot x)^5 } \, dx
$$
===Choices
C+\frac{1}{128}\cdot\left(2\cdot\left(\tan(4\cdot x)\right)^2+6\cdot\ln\left(\left|\tan(4\cdot x)\right|\right)+\frac{1}{4}\cdot\left(\tan(4\cdot x)\right)^4-\frac{2}{... | C+\frac{1}{128}\cdot\left(2\cdot\left(\tan(4\cdot x)\right)^2+6\cdot\ln\left(\left|\tan(4\cdot x)\right|\right)+\frac{1}{4}\cdot\left(\tan(4\cdot x)\right)^4-\frac{2}{\left(\tan(4\cdot x)\right)^2}-\frac{1}{4\cdot\left(\tan(4\cdot x)\right)^4}\right) | general_qa | 629 |
The following is a multiple choice question (with answers).
===Question
Methods for protecting physical evidence at crime scenes include:
I. Marking Protection Method
II. Documentation Protection Method
III. Perimeter Protection Method
IV. Covering Protection Method
V. Transfer Protection Method
===Choices
II,III,IV
I... | I,II,IV,V | general_qa | 112 |
The following is a multiple choice question (with answers).
===Question
ABCDE is a frictionless circular track of radius R. A body slides down the track from point A which is at a height h=5 cm. Maximum value of R for the body to successfully complete the loop is :
===Choices
5 cm
$$\frac{25}{3}cm$$
$$\frac{20}{4}cm$$... | 5 cm | general_qa | 150 |
The following is a multiple choice question (with answers).
===Question
In woodland use planning, () is classified as a functional area for woodland use.
===Choices
Ecological Public Welfare Forest Functional Zone
Urban, Industrial and Agricultural Development Integration Zone
Biodiversity Conservation and Habitat Net... | Ecological Public Welfare Forest Functional Zone | general_qa | 121 |
The following is a multiple choice question (with answers).
===Question
Derive an expression for the Rate (k) of reaction :$2N_{2}O_{5}(g)\rightarrow 4NO_{2}(g)+O_{2}(g)$With the help of following mechanism:$N_{2}O_{5}\overset{K_a}{\rightarrow}NO_{2}+NO_{3}$$NO_{3}+NO_{2}\overset{K_{-a}}{\rightarrow}N_{2}O_{5}$$NO_{2}+... | $$\displaystyle Rate=\frac{k_{a}\times k_{b}}{k_{-a}+2k_{b}}[N_{2}O_{5}]$$ | general_qa | 578 |
The following is a multiple choice question (with answers).
===Question
In what year was the Scripps Press founded?
===Choices
1890
1876
1895
1879
1885
1903
1898
1889
1892
1901 | 1889 | general_qa | 76 |
The following is a multiple choice question (with answers).
===Question
In the field of education, there have been attempts to use an integrated curriculum to strengthen the connections both between disciplines and between academic knowledge and real life. What is the typical order of integrated courses arranged from h... | Core Courses, Broad Area Courses, Related Courses | general_qa | 163 |
The following is a multiple choice question (with answers).
===Question
Calculate the reflectance of a quarter-wave antireflection film, of magnesium fluoride (n = 1.35) coated on an optical glass surface of index 1.52.
===Choices
0.8%
3.5%
0.5%
4.0%
2.8%
0.05%
2.2%
0.2%
1.8%
1.2% | 0.8% | general_qa | 98 |
The following is a multiple choice question (with answers).
===Question
The number of increasing sequences of positive integers $a_1 \le a_2 \le a_3 \le \cdots \le a_{10} \le 2007$ such that $a_i-i$ is even for $1\le i \le 10$ can be expressed as ${m \choose n}$ for some positive integers $m > n$ . Compute the remainde... | 8 | general_qa | 133 |
The following is a multiple choice question (with answers).
===Question
A dense forest refers to a scenic forest with a canopy closure between certain percentages( ).
===Choices
0.7~1.2
0.8~1.1
0.3~1.0
0.4~1.5
0.7~1.0
0.5~1.0
0.6~0.8
0.5~1.2
0.6~0.9
0.6~1.1 | 0.7~1.0 | general_qa | 113 |
The following is a multiple choice question (with answers).
===Question
The appropriate time to perform a transabdominal tubal ligation is ____.
===Choices
non-pregnant women during the menstruation period
non-pregnant women 7 to 8 days after menstruation
pregnant women 3 to 4 days before child delivery
non-pregnant w... | non-pregnant women 3 to 4 days after menstruation | general_qa | 167 |
The following is a multiple choice question (with answers).
===Question
The method of indicating the quality of goods that have special requirements in terms of shape or characteristics in color, aroma, and taste is ( ).
===Choices
Trading Based on Grading
Trading Based on Evaluation
Trading Based on Specifications
Tr... | Trading Based on Samples | general_qa | 96 |
The following is a multiple choice question (with answers).
===Question
For a single-degree-of-freedom mechanical system subject to a sinusoidal excitation force of $10 \sin(0.1 \pi t) \ \mathrm{N}$, the steady-state displacement of the system is $0.1 \sin(0.1 \pi t - 30^{\circ}) \ \mathrm{m}$. Try to determine the wor... | $$
4.71 \ \mathrm{J}, 0.045 \ \mathrm{J}_{\circ}
$$ | general_qa | 401 |
The following is a multiple choice question (with answers).
===Question
What is the position of The Bee Chinese Newspaper in modern Chinese newspaper history?
===Choices
the first nationwide evening paper
the initial local business journal
the foremost cultural weekly magazine
the earliest daily economic review
the fi... | the first foreign language newspaper | general_qa | 91 |
The following is a multiple choice question (with answers).
===Question
Given a product category of outboard engine and an attribute value of manual, which of the following can be a valid attribute?
===Choices
fishing line type
control type
operation type
operation method
item form
operation mode
film lighting type | operation mode | general_qa | 65 |
The following is a multiple choice question (with answers).
===Question
The MR imaging in multiple sclerosis will show lesion in:
===Choices
White matter tracts
Deep cerebral white matter
White matter and grey matter
Cerebral white matter
Basal ganglia
Thalamus
Grey matter
Deep white matter
Cerebral cortex
White matte... | White matter | general_qa | 73 |
The following is a multiple choice question (with answers).
===Question
Identify the smallest natural number (positive integer) $i$ such that for every integer $x$ with $0 < x < 2784$, there exists an integer $l$ for which satisfies the expression \[ \frac{x}{2784} < \frac{l}{i} < \frac{m+1}{2785}. \]
===Choices
5567
... | 5569 | general_qa | 144 |
The following is a multiple choice question (with answers).
===Question
What is the apparent solubility product definition of calcium carbonate (CaCO₃)?
===Choices
[Ca²⁺][CO₃²⁻]
[Ca²⁻][CO₃²⁻]
[Ca²⁺][CO₃⁴⁻]
[Ca²⁺][CO₃⁻]
[Ca²⁻][CO₃²⁺]
[Ca⁺][CO₃²⁻]
[Ca²⁺][CO₃²⁺]
[Ca⁺][CO₃²⁺]
[Ca][CO₃⁺]
[Ca²⁺][CO₃³⁻] | [Ca²⁺][CO₃²⁻] | general_qa | 140 |
The following is a multiple choice question (with answers).
===Question
Regarding the distribution of positive sequence voltage, negative sequence voltage and zero sequence voltage during short circuit fault, what is correct in the following statement?
===Choices
In a generator, the negative sequence voltage and zero ... | The positive-sequence voltage at the generator terminal is the highest, and the negative-sequence voltage and zero-sequence voltage are highest at the short-circuit point. | general_qa | 266 |
The following is a multiple choice question (with answers).
===Question
In what year was Ukrainian-born mathematician Aleksandr Yakovlevich Povzner the first to apply the technique of transformation operators of Volterra type to spectral theory?
===Choices
1947
1946
1945
1943
1938
1944
1949
1948
1958
1953 | 1948 | general_qa | 101 |
The following is a multiple choice question (with answers).
===Question
What is the operating system version of the RoBoHoN smart communication device?
===Choices
Android 5.0.7
Android 5.0.1
Android 5.0.6
Android 5.0.4
Android 5.0.2
Android 5.0.3
Android 4.4
Android 5.0.5
Android 5.1
Android 5.0 | Android 5.0 | general_qa | 106 |
The following is a multiple choice question (with answers).
===Question
Using the method of integration under the integral sign, when \( b > a > 0 \), the integral \(\int_0^1 \sin(\ln \frac{1}{x}) \frac{x^b - x^a}{\ln x} dx = \)
===Choices
\(\arctan(b) - \arctan(a) \)
\(\arctan(b+1) - \arctan(a+1) \)
\(\arctan(1+a) - ... | \(\arctan(1+b) - \arctan(1+a)\) | general_qa | 260 |
The following is a multiple choice question (with answers).
===Question
In the given LC circuit if initially capacitor $C$ has charge $Q$ on it and $2C$ has charge $2Q$. The polarities are as shown in the figure. Then after closing switch $S$ at $t=0$
===Choices
initial rate of growth of current in inductor will be \(... | energy will get equally distributed in both the capacitor just after closing the switch | general_qa | 262 |
The following is a multiple choice question (with answers).
===Question
Right hilum angle is the angle between which two structures?
===Choices
Right middle lobe bronchial artery and right lung apical segment
Right hilum lymph nodes and right pulmonary vein branch
Right lower lobe segmental vein and right main venous ... | Right upper lobe posteroinferior venous trunk and right lower lobe pulmonary artery | general_qa | 161 |
The following is a multiple choice question (with answers).
===Question
We now define an algorithm: The definition of a(n) is the coordination sequence for "cab" 3D uniform tiling formed from octahedra and truncated cubes, representing the number of vertices of the tiling at a given distance from a fixed vertex. Given ... | [4765, 4997, 5182, 5381, 5629, 5878, 6085, 6297, 6562, 6837] | general_qa | 730 |
The following is a multiple choice question (with answers).
===Question
The composition glass slab shown in figure is manufactured so that its refractive index varies along its thickness according to the relation:
$\mu (x) = \left(1 + \dfrac{lpha x}{t} \right)$, where $t$ is the thickness of the slab. The optical path... | $$\dfrac{t}{1 + lpha}$$ | general_qa | 253 |
The following is a multiple choice question (with answers).
===Question
Simplify the expression $\sin(x) \cdot \left(\csc(x)-\sin(x)\right)$ 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 - sin(x)^2 + sin(x)
1 - sin(x)
1 -... | cos(x)^2 | general_qa | 141 |
The following is a multiple choice question (with answers).
===Question
Which expression is correct for the work done in adiabatic reversible expansion of an ideal gas
===Choices
W=nC_v \quad \ln \frac{T_1}{T_2}
W=nC_v \quad \ln \frac{V_2}{V_1}
$$W=-\int _{ 1 }^{ 2 }{ PdV } $$
W=nC_v \quad \ln \frac{T_2}{T_1}
$$W=P\tr... | $$W=P\triangle V$$ | general_qa | 237 |
The following is a multiple choice question (with answers).
===Question
Which of the following combustion chamber designs include both compression swirl and expansion swirl designs?(Choose the option that includes all the correct statements) 1. Spherical type 2. Swirl chamber type 3. Pre-chamber type 4. Shallow bowl ty... | 125 | general_qa | 110 |
The following is a multiple choice question (with answers).
===Question
Y,K,n represent the Young's modulus, bulk modulus and rigidity modulus of a body respectively. If rigidity modulus is twice the bulk modulus, then
===Choices
$$Y=9 n/18$$
$$Y=10 n/18$$
$$Y=9K/5$$
$$Y=9 n/5$$
$$Y=5 n/9$$
$$Y=5 n/10$$
$$Y=18 n/9$$
$... | $$Y=18 K/5$$ | general_qa | 146 |
The following is a multiple choice question (with answers).
===Question
It is known that $$f ( k )=2 \left( {\frac{\sqrt{2}} {2}} \right)^{k} \operatorname{s i n} {\frac{\pi} {4}} k U ( k )$$, its z-transform F(z) = () and its domain of convergence ().
===Choices
$$F ( z )=\frac{z} {z^{4}-z+0. 5}, \ \ | z | > \frac{\s... | $$F ( z )=\frac{z} {z^{2}-z+0. 5}, \ \ | z | > \frac{\sqrt{2}} {2} \circ$$ | general_qa | 503 |
The following is a multiple choice question (with answers).
===Question
A truck, in order to overtake a vehicle, is moving into the left contraflow lane at 90km/h when it suddenly notices a car coming head-on 80m ahead of it Assume that the car is traveling at 65km/h and also notices the truck overtaking it - Given tha... | Yes, $46 km/h$ | general_qa | 221 |
The following is a multiple choice question (with answers).
===Question
$50$% neutralisation of a solution of formic acid $\left( { K }_{ a }=2\times { 10 }^{ -4 } \right) $ with $NaOH$ would result in a solution having a hydrogen ion concentration of:
===Choices
4.20
2.85
3.39
$$4.0$$
3.58
3.72
$$3.69$$
3.45
$$1.85$$... | $$3.69$$ | general_qa | 138 |
The following is a multiple choice question (with answers).
===Question
The crucible after calcination should be cooled to below ( )°C before being moved into the dryer.
===Choices
250°C
150°C
350°C
400°C
180°C
450°C
200°C
120°C
300°C
100°C | 200°C | general_qa | 88 |
The following is a multiple choice question (with answers).
===Question
In the 1930s, as the "relative stability" of the capitalist world disappeared, Japan's () finally went bankrupt.
===Choices
Imperialist Agenda
Dollar Diplomacy
China Policy
Coordinated Diplomacy
Peaceful Diplomacy
Economic Isolationism
Expansionis... | Coordinated Diplomacy | general_qa | 92 |
The following is a multiple choice question (with answers).
===Question
The radiation aperture on the artificial black body is a circle with a diameter of 20 mm, with a radiance of $E_{b} = 3.72 \times 10^{5} \, \text{W/m}^{2}$. A radiometer is placed directly in front of this black body aperture at a distance $l = 0.5... | $$
2. 3 8 \times1 0^{-3} \, \mathrm{W}
$$ | general_qa | 401 |
The following is a multiple choice question (with answers).
===Question
Using an instrument with $H_0=2.3487T$ to measure $^{19}$F and $^{31}$P, knowing that their gyromagnetic ratios are $2.518\times10^{8}$$T^{- 1}\cdot s^{- 1}$ and $1.0841\times 10^8$ $T^{- 1}\cdot s^{- 1}$ respectively.What are their resonance frequ... | $$
9 4. 1 2 8 \mathrm{( M H z )}
$$
$$
4 0. 5 2 4 ( \mathrm{M H z} )
$$ | general_qa | 557 |
The following is a multiple choice question (with answers).
===Question
What is the equivalent black body temperature on the surface of the Sun (radius $6.96 \times 10^8$ meters)?
===Choices
5769°K
5775°K
5773°K
5771°K
5772°K
5777°K
5770°K
5776°K
5774°K
5778°K | 5770°K | general_qa | 116 |
The following is a multiple choice question (with answers).
===Question
For each real number $x$, let \[ f(x) = \sum_{n\in S_x} \frac{1}{2^n}, \] where $S_x$ is the set of positive integers $n$ for which $\lfloor nx \rfloor$ is even. What is the largest real number $L$ such that $f(x) \geq L$ for all $x \in [0,1)$? (As... | \frac{4}{7} | general_qa | 204 |
The following is a multiple choice question (with answers).
===Question
The following statement about the state index of cohesive soil is correct ().
===Choices
The smaller the liquid limit, the higher the natural water content in the soil, and the harder the soil texture.
The smaller the liquid limit, the higher the ... | The greater the liquid limit, the higher the natural water content in the soil, and the softer the soil texture. | general_qa | 215 |
The following is a multiple choice question (with answers).
===Question
For the well-posedness of the solution to a partial differential equation (PDE) with boundary conditions, it refers to the solution having () of the problem.
===Choices
existence, uniqueness, and local stability
existence, uniqueness, and boundedn... | all of the above | general_qa | 109 |
The following is a multiple choice question (with answers).
===Question
The rise in temperature of an ideal gas ($\displaystyle Y ={ 5 }/{ 3 }$) when at $\displaystyle { 27 }^{ o }C$ it is adiabatically compressed to $\dfrac{8}{27}$ of its original volume is:
===Choices
$$\displaystyle { 398 }K$$
$$\displaystyle { 225... | $$\displaystyle { 375 }K$$ | general_qa | 196 |
The following is a multiple choice question (with answers).
===Question
The forms of peer teaching in the integrated education of preschool special children include ().
===Choices
Group
Non-fixed activity group, non-paired relationship
Non-paired relationship, fixed activity group
Non-fixed relationship, group activit... | Paired relationship, non-fixed activity group | general_qa | 105 |
The following is a multiple choice question (with answers).
===Question
A cast-iron pulley rotates on a motor shaft at 250 rpm and delivers 50 h.p. Calculate the pulley diameter if density (\rho) of cast-iron is 0.05 lb/in^3 and tensile stress is 150 lbs/in?
===Choices
88.9 in
90.2 in
82.2 in
70.6 in
77.7 in
95.5 in
7... | 82.2 in | general_qa | 139 |
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