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
Evaluate the following integrals:$\int _{\mathrm{all~space}}( r^{2}+ \mathbf{r} \cdot \mathbf{a} + a^{2}) \delta ^{3}( \mathbf{r} - \mathbf{a} ) d\tau$,where a is a fixed vector and $a$ is its magnitude.
===Choices
$$
{3 a^{2}}.
$$
$$
{5 a^{2}}.
$... | $$
{3 a^{2}}.
$$ | general_qa | 209 |
The following is a multiple choice question (with answers).
===Question
On what day, month, and year was the case of Arthur J. Lomax v. Christina Ortiz-Marquez decided in the Supreme Court of the United States?
===Choices
8 September 2020
8 October 2020
8 June 2020
8 April 2020
8 March 2020
8 July 2020
8 January 2020
... | 8 June 2020 | general_qa | 130 |
The following is a multiple choice question (with answers).
===Question
The line voltage of a three-phase transformer is $U_{e}=110 \mathrm{kV}$, the capacity is $P = 31.5 \mathrm{MVA}$, and the core material is hot-rolled silicon steel sheet. The excitation current is $I\%=4\%$, with continuous windings, $\mathrm{C=30... | $$7.05$$ | general_qa | 183 |
The following is a multiple choice question (with answers).
===Question
The innovation of the automatic transfer system belongs to ( ).
===Choices
innovation focused on enhancing customer experience
innovation driven by technological progress
innovation to circumvent administrative control
innovation for streamlining ... | innovation to circumvent administrative control | general_qa | 103 |
The following is a multiple choice question (with answers).
===Question
For a certain metal, the $K$ absorption edge is at $0.172\mathring{A}$. The wavelength of $K_lpha, K_\beta$ and $K_\gamma$ lines of $K$ series are $0.210\mathring{A}, 0.192\mathring{A}$ and $0.108\mathring{A}$ respectively. The energies of $K,... | $$E_M = -3.21\space keV$$ | general_qa | 279 |
The following is a multiple choice question (with answers).
===Question
A certain 1.3 $\mu$m optical wavelength system operates at a rate of 100 Mb/s, using an InGaAsP LED light source. The average power coupled into the single-mode optical fiber is 0.1 $\mathrm{mW}$. The fiber loss is 1 dB/km, with a connection loss o... | 20km | general_qa | 200 |
The following is a multiple choice question (with answers).
===Question
In which stage of fruit development is the process of "fruit set" most critical for ensuring a high-quality harvest?
===Choices
Germination
Ripening
Flowering
Seed dispersal
Pollination
Maturation
Blossoming
Seed formation
Fertilization
Bud format... | Pollination | general_qa | 74 |
The following is a multiple choice question (with answers).
===Question
Consider a circular cylinder in a hypersonic flow, with its axis perpendicular to the flow. Let $\phi$ be the angle measured between radii drawn to the leading edge (the stagnation point) and to any arbitrary point on the cylinder. The pressure coe... | $$
{c_{\mathrm{d}}=4 / 3}
$$ | general_qa | 357 |
The following is a multiple choice question (with answers).
===Question
_____ leaves refer to leaves on the same plant that are similar in morphology, structure, and function, capable of both photosynthesis and producing sporangia.
===Choices
Equiform
Biomorphic
Uniform
Isomorphic
Similarform
Homomorphic
Polymorphic
M... | Homomorphic | general_qa | 79 |
The following is a multiple choice question (with answers).
===Question
A processor contains a total of 32 registers and uses a 16-bit immediate number. Its instruction system structure comprises 142 instructions in total. In a given program, 20% of the instructions have one input register and one output register; 30% ... | 40 | general_qa | 192 |
The following is a multiple choice question (with answers).
===Question
The bandgap of $\mathrm{InSb}$ is known to be $E_{g} = 0.15 \, \text{eV}$, the effective mass of the electron is $m_{\mathrm{e}} = 0.014 \, m_{0}$, and the effective mass of the hole is $m_{\mathrm{h}} = 0.18 \, m_{0}$ (where $m_{0}$ is the inertia... | $7.2\mathrm{mV}$ | general_qa | 335 |
The following is a multiple choice question (with answers).
===Question
Small amplitude motions occur in an initially motionless two-layer system where layer \(i\) has a density \(\rho_i\) and equilibrium thickness \(H_i\), \(i = 1, 2\). Consider only waves with \(l_* = 0\) and use \(\rho_2 - \rho_1 = 1\) kg m\(^{-3}\)... | Barotropic: \(4.1 \times 10^{-3}\) m/s, Baroclinic: \(2.5 \times 10^{-3}\) m/s | general_qa | 579 |
The following is a multiple choice question (with answers).
===Question
The downward-discharge external grooved wheel seeder sows large seeds by changing the _____.
===Choices
Speed of the sowing wheel
Position of the seed-rowing tongue
Rotation of the seeder handle
Pressure applied to seeds
Weight of the seeds in the... | Position of the seed-rowing tongue | general_qa | 106 |
The following is a multiple choice question (with answers).
===Question
When two simple harmonic vibrations in the same direction and of the same frequency are superimposed, the amplitude of the resultant vibration is independent of which of the following factors?
===Choices
the phase difference between the two compon... | the frequency of the two component vibrations | general_qa | 177 |
The following is a multiple choice question (with answers).
===Question
The flat plate keel is also known as _____ line plate
===Choices
A
C
K
B | K | general_qa | 37 |
The following is a multiple choice question (with answers).
===Question
How many types of rapids that produce heavy rainfall are classified by height?
===Choices
3
2
9
7
6
8
5
1
4
10 | 3 | general_qa | 52 |
The following is a multiple choice question (with answers).
===Question
Consider a segment of length 10. Points A and B are chosen randomly such that A and B divide the segment into three smaller segments. What is the probability that the three smaller segments could form the sides of a triangle?
===Choices
100%
0
33.... | 25% | general_qa | 102 |
The following is a multiple choice question (with answers).
===Question
What triggered the outbreak of the American Civil War?
===Choices
Enactment of the Homestead Act
The South declared its independence
States' rights were increasingly challenged
The publication of Uncle Tom's Cabin
The expansion of slavery into new... | Lincoln was elected President | general_qa | 103 |
The following is a multiple choice question (with answers).
===Question
The task of hydrological statistics is to study () and analyze hydrological stochastic phenomena.
===Choices
Temporary Variation Traits
Environmental Change Traits
Constant Variation Elements
Organizational Change Attributes
Statistical Variation ... | Statistical Variation Characteristics | general_qa | 79 |
The following is a multiple choice question (with answers).
===Question
A proton, an electron, and a Helium nucleus, have the same energy. They are in circular orbits in a plane due to magnetic field perpendicular to the plane. let $r_p$, $r_e$ and $r_{He}$ be their respectively radii, then ,
===Choices
r_e < r_p < r_... | $$r_e < r_p = r_{He}$$ | general_qa | 185 |
The following is a multiple choice question (with answers).
===Question
In forest ecological engineering, the primary measure to maintain ecological balance is ( ).
===Choices
Increasing Renewable Energy Sources
Protecting the Primeval Forest
Conserving Natural Wetlands
Boosting Ecotourism Ventures
Intensifying Indust... | Protecting the Primeval Forest | general_qa | 91 |
The following is a multiple choice question (with answers).
===Question
The arrangement of large pigment molecules on the thylakoid membrane is tight and orderly, layered from the outside to the inside. This arrangement facilitates energy transfer towards the reaction center and ensures that energy cannot be transmitte... | Carotenoids, chlorophyll b, chlorophyll a | general_qa | 188 |
The following is a multiple choice question (with answers).
===Question
The atmosphere is 300K, and 100KJ of heat is emitted from a heat source with a temperature of 1000K. The effective energy of this heat is ().
===Choices
60kJ
10kJ
70kJ
30kJ
80kJ
100kJ
0kJ
90kJ
50kJ
120kJ | 70kJ | general_qa | 101 |
The following is a multiple choice question (with answers).
===Question
Consider laminar viscous flow in the following situation, which models flow in the bronchi or a network of branching blood vessels. A vessel of radius $R$ connects to $N$ smaller vessels, each of radius $xR$.
What is the relationship between total ... | $$
\sqrt{N}
$$ | general_qa | 198 |
The following is a multiple choice question (with answers).
===Question
Two volatile liquids $A$ and $B$ an mixed in mole ratio $1 : 3$, to form an ideal liquid solution. Vapour pressure of pure $A$ and $B$ are $600\ torr$ and $200\ torr$. Volume of container for vapour is $76$ litre. $(R = 1/12$ litre atm/K/mole).Calc... | $$0.3\ mole$$ | general_qa | 215 |
The following is a multiple choice question (with answers).
===Question
The MSK signal is not only () continuous, but also () continuous, so the spectrum is concentrated in the main flap.
===Choices
Spectrum; Waveform
Frequency; Waveform
Amplitude; Frequency
Frequency; Amplitude
Time; Spectrum
Amplitude; Time
Time; Fr... | Waveform: Phase | general_qa | 88 |
The following is a multiple choice question (with answers).
===Question
At what temperature, hydrogen molecules will escape from the earth's surface? (TAke mass of hydrogen molecule $=0.34\times{10}^{-6}kg$, Boltzmann constant $=1.38\times{10}^{-23}K{J}^{-1}$, Radius of earth $=6.4\times{10}^{6}m$ and acceleration due ... | $$10K$$ | general_qa | 177 |
The following is a multiple choice question (with answers).
===Question
pH of $0.01M (NH_4)_2SO_4$ and $0.02M$ $NH_4OH$ buffer $(pK_{a\ (NH_4^+)}=9.26)$ is
===Choices
$$9.26 + log(0.25)$$
$$9.26 +log2$$
$$9.26+ log1$$
$$9.26 + log0.5$$
$$9.26 + log(1.75)$$
$$4.74 +log2$$
$$9.26 + log(2.5)$$
$$4.74$$
$$9.26 + log(1.25)... | $$9.26 +log2$$ | general_qa | 193 |
The following is a multiple choice question (with answers).
===Question
Organic matter in the ocean comes from which of the following?
===Choices
Surface water mixing, river discharge, tides, marine vegetation
Tectonic movements, air deposition, marine animal contributions
Glacial inputs, atmospheric conditions, seabe... | Continental runoff, atmosphere, chemical processes within the ocean, biological processes | general_qa | 172 |
The following is a multiple choice question (with answers).
===Question
What is the difference between central projection and orthogonal projection?
===Choices
Influence of observer position: effect of surface texture: impact of environmental factors.
Differences in projector placement: effect of screen angle: influen... | Impact of projection distance: effect of projection surface inclination: influence of terrain undulations. | general_qa | 191 |
The following is a multiple choice question (with answers).
===Question
Sum the series $\sum_{m=1}^{\infty} \sum_{n=1}^{\infty}\frac{m^2 n}{3^m(n3^m+m3^n)}$
===Choices
0.51234
0.14659
0.23456
0.73145
0.62500
0.41567
0.33333
0.28125
0.19375
0.77777 | 0.28125 | general_qa | 142 |
The following is a multiple choice question (with answers).
===Question
In a binary mixture, the diffusion coefficients of component A or component B are ().
===Choices
Thermal Properties of the System
Physical Properties of Component A or B
Chemical Properties of Component A or B
It depends solely on the state of the... | Material Properties of the System | general_qa | 121 |
The following is a multiple choice question (with answers).
===Question
An infinitely long straight cylindrical surface with a radius of $a$ is uniformly charged, with a charge density of $\sigma$ per unit area. When this cylindrical surface rotates around its geometric axis with a constant angular velocity of $\omega$... | $$
\frac{1} {2} \pi\mu_{0} \sigma^{2} \omega^{2} a^{4}
$$ | general_qa | 336 |
The following is a multiple choice question (with answers).
===Question
Three solutions are prepared by adding 'w' gm of 'A' into 1 kg of water, 'w' gm of 'B' into another 1 kg of water and 'w' gm of 'C' in another 1 kg of water (A, B, C, are non electrolytic). Dry air is passed from these solutions in sequence (A $\ri... | $M_A : M_B : M_C$ = 4 : 3 : 5 | general_qa | 356 |
The following is a multiple choice question (with answers).
===Question
What are the terraces divided into?
===Choices
Tectonic terraces, sedimentary terraces, chemical terraces, biological terraces.
River terraces, marine terraces, alluvial terraces, volcanic terraces.
Upper terraces, middle terraces, lower terraces,... | Erosion terraces, accretionary terraces, basal terraces, buried terraces. | general_qa | 201 |
The following is a multiple choice question (with answers).
===Question
A circular ring of mass m and radius R rests flat on a horizontal smooth surface as shown in figure. A particle of mass m, and moving with a velocity $v$ collides inelastically $(e= 0)$ with the ring. The angular velocity with which the system rota... | $$\displaystyle \frac{v}{3R}$$ | general_qa | 216 |
The following is a multiple choice question (with answers).
===Question
The atmospheric planetary boundary layer can be divided into what three main layers?
===Choices
The advective layer, the near-surface layer, and the Ekman layer.
The thermal layer, the mixing layer, and the inversion layer.
The wind layer, the moi... | The advective layer, the near-surface layer, and the Ekman layer. | general_qa | 174 |
The following is a multiple choice question (with answers).
===Question
The conc. of ${Fe}^{3+}$ ions in a sample of water is found to be $50\times {10}^{-5}M$. Calculate the $pH$ at which $99$% of ${Fe}^{3+}$ will be precipitated. ${ K }_{ { sp }_{ Fe{ \left( OH \right) }_{ 3 } }\quad }={10}^{-36}$.
===Choices
4.4
... | 3.7 | general_qa | 154 |
The following is a multiple choice question (with answers).
===Question
Experiments have proven that electromagnetic waves possess momentum, with momentum density (momentum per unit volume) given by $G = \varepsilon_{0} \mu_{0} S$, where $S = E \times H$ is the Poynting vector. It is known that when sunlight is directl... | $$
5. 8 \times1 0^{8} \mathrm{~N}
$$ | general_qa | 399 |
The following is a multiple choice question (with answers).
===Question
Which of the following musical structures occurs in ABA form?
===Choices
a serenade
a fugue
a minuet
a canon
a prelude
a march
a ballad
a waltz
a roundelay
a sonata | a roundelay | general_qa | 67 |
The following is a multiple choice question (with answers).
===Question
The film movement with the largest scale, the deepest influence and the greatest impact in the history of world cinema in the 20th century is _______.
===Choices
Modern Independent Film
Italian Neorealism
Hollywood Golden Age
Japanese Cinema
Germa... | French New Wave Film Movement | general_qa | 97 |
The following is a multiple choice question (with answers).
===Question
Determine the maximum discharge of water at 32°F that may be carried by a 3-in venturimeter, which has a coefficient of velocity of 0.95 without cavitation when the inlet pressure is 24 psia.
===Choices
0.9
0.5
0.62
0.92
0.85
0.8
0.75
1.0
0.65
0.7... | 0.7163 | general_qa | 115 |
The following is a multiple choice question (with answers).
===Question
A charged particle having some mass is resting in equilibrium at a height H above the centre of a unifomly charged non-conducting horizontal ring of radius R. The force of gravity acts downwards. The equilibrium of the particle will be stable:
===... | only if $ \mathrm{H}>\frac{\mathrm{R}}{\sqrt{2}} $ | general_qa | 267 |
The following is a multiple choice question (with answers).
===Question
What is the spectral classification of the 81 Tauri star in astronomy?
===Choices
A5b
A5l
A5s
A5n
A5m
A5v
A5q
A5o
A5k
A5p | A5m | general_qa | 73 |
The following is a multiple choice question (with answers).
===Question
The column base size of a multi-story factory building is $800 \mathrm{mm} \times 1000 \mathrm{mm}$, using a reinforcement-free spread foundation calculated according to the standard combination of load effects. The vertical force transferred to th... | 0.8,173.2 | general_qa | 323 |
The following is a multiple choice question (with answers).
===Question
The unit cell for uranium ($U$) has orthorhombic symmetry, with a, b, and c lattice parameters of 0.286, 0.587, and 0.495 nm, respectively. If its density, atomic weight, and atomic radius are $19.05 g/cm^{3}$, 238.03 g/mol, and 0.1385 nm, respecti... | $$
0. 5 3 6
$$ | general_qa | 241 |
The following is a multiple choice question (with answers).
===Question
Around 1600, opera art was born in Florence, Italy. What is the name of the first opera?
===Choices
Euridice
The Magic Flute
Rigoletto
Tosca
Orfeo
Carmen
Aida
Daphne
nternal server error
La Traviata | Daphne | general_qa | 85 |
The following is a multiple choice question (with answers).
===Question
Experiments have found that if the atomic nucleus is viewed as $A$ small hard spheres packed together to form a larger sphere, the relationship between the radius of the sphere and the mass number $A$ of the nucleus is $R=r_{0} A^{1 / 3}$, where $r... | $$
2. 3 \times1 0^{1 7} \ \mathrm{k g} \cdot\mathrm{m}^{-3}
$$ | general_qa | 448 |
The following is a multiple choice question (with answers).
===Question
Congenital deafness is an autosomal recessive genetic disorder. What would happen to the children born to a couple where both have congenital deafness?
===Choices
Half of the children are deaf.
One parent must be symptom-free for children to avoid... | The probability of being afflicted with deafness is related to whether the first child is deaf. | general_qa | 154 |
The following is a multiple choice question (with answers).
===Question
A monoatomic ideal gas undergoes a thermodynamic process according to the relation $PV^2$= constant. If the molar heat capacity of this gas at constant volume is C, then its molar heat capacity for the given process will be
===Choices
$$\frac{4C}{... | C | general_qa | 162 |
The following is a multiple choice question (with answers).
===Question
Calculate the electromotive force from the equilibrium constant. For the reaction $2 \mathrm{H_{2} O}$(gas)$\rightleftharpoons$$2 \mathrm{H}_{2}$(gas)+$O_{2}$(gas) at 25°C, the equilibrium constant ${\mathrm{K_{p}}}$ is $9.7 \times 10^{-81}$, and t... | $$
= 1. 2 2 6 V
$$ | general_qa | 381 |
The following is a multiple choice question (with answers).
===Question
What is the principle adopted by the United Nations International Contract for the Sale of Goods in 1980 with respect to the effective date of the commitment?
===Choices
Standard principle of understanding achievement
Immediate principle of contra... | Effective principle of arrival | general_qa | 145 |
The following is a multiple choice question (with answers).
===Question
We now define an algorithm: The definition of a(n) is the characteristic function of natural numbers whose number of divisors is a Lucas number. Given the input x_list (a series of values): [94, 95, 96, 97, 98, 99, 100, 101, 102, 103], determine th... | [1, 1, 0, 1, 0, 0, 0, 1, 0, 1] | general_qa | 409 |
The following is a multiple choice question (with answers).
===Question
In what year did Norodom Ranariddh join the FUNCINPEC?
===Choices
1985
1984
1989
1986
1982
1988
1981
1980
1987
1983 | 1983 | general_qa | 82 |
The following is a multiple choice question (with answers).
===Question
Basin's total evaporation includes _____.
===Choices
Land surface evaporation, plant transpiration, soil evaporation
Transpiration from vegetation, water vapor from soils, and evaporation from lakes
Evaporation from water surfaces, evaporation fro... | Evaporation from water surfaces, transpiration from plants, soil evaporation | general_qa | 182 |
The following is a multiple choice question (with answers).
===Question
In binary continuous distillation operation, the change in the feed thermal condition parameter q will cause the ( ) to change.
===Choices
rectifying section operating line and stripping section operating line
equilibrium line and stripping sectio... | stripping section operating line and feed line | general_qa | 130 |
The following is a multiple choice question (with answers).
===Question
For two particles A and B (moving with constant velocities) to collide, relative velocity of A with respect to B should be along AB At time t = 0, particle A is at (1m, 2m) and B is at (5m, 5m). Velocity of B along x-direction is 2 $m s ^ { - 1 }$ ... | 5 | general_qa | 185 |
The following is a multiple choice question (with answers).
===Question
A transverse wave travelling on a taut string is represented by $y =0.01\sin 2\pi (10t -x)$ where y and x are in metre and t is in second. Then
===Choices
Maximum particle speed is $\frac{\pi}{6} m/s$
Maximum particle speed is $\frac{\pi}{4}$ m/s
... | Maximum particle speed is $\frac{\pi}{5}$ m/s | general_qa | 208 |
The following is a multiple choice question (with answers).
===Question
The hydrological department generally uses () as the starting point for daily rainfall observation.
===Choices
16:00
8:00
10:00
18:00
12:00
20:00
6:00
4:00
0:00
2:00 | 8:00 | general_qa | 87 |
The following is a multiple choice question (with answers).
===Question
In actual business, the task of examining letters of credit is undertaken by ( ).
===Choices
Shipping companies
Legal advisors
Insurance agencies
Customs
Exporters
Banks
Government agencies
Regulatory authorities
Banks and beneficiaries
Importers | Banks and beneficiaries | general_qa | 65 |
The following is a multiple choice question (with answers).
===Question
Given that,
$$Ni^{2+}/ Ni = 0.25\ V, Cu^{2+} / Cu = 0.34\ V$$
$Ag^{+} / Ag =0.80\ V$ and $Zn^{2+}/ Zn = -0.76\ V$
Which of the following reactions under standard condition will not take place in the specified direction?
===Choices
Zn(s) + 2H^{+}(a... | $$Cu(s) + 2H^{+}(aq.) \rightarrow Cu^{2+}(aq.) + H_{2}(g)$$ | general_qa | 373 |
The following is a multiple choice question (with answers).
===Question
What is the rate limiting enzyme in the fatty acid B oxidation pathway ( ).
===Choices
B-hydroxyacyl CoA dehydrogenase
Carnitine palmitoyltransferase II
Carnitine acyltransferase II
Acyl CoA synthase
Acyl CoA oxidase
Carnitine acyltransferase I
B-... | Carnitine acyltransferase I | general_qa | 110 |
The following is a multiple choice question (with answers).
===Question
With regard to international franchise agreements, which of the following statements is correct?
===Choices
The franchise arrangement restricts all partners from nation-based decision making
The franchise agreement ensures universal regulatory sta... | The franchise agreement allows foreign investors to enjoy the rights of resource development or infrastructure management exclusively owned by the government | general_qa | 163 |
The following is a multiple choice question (with answers).
===Question
In static linked lists, what do pointers represent?
===Choices
Location of the previous element in the list
Position of the next element in the array
Index of the next element in memory
Address of the element pointed to by the left or right link
R... | Position of the next element in the array | general_qa | 106 |
The following is a multiple choice question (with answers).
===Question
The wavelength of de-Broglie waves associated with neutrons at room temperature T is (E=kT)
===Choices
$$\dfrac { 30.7 }{ \sqrt { T } } \mathring { A } $$
\dfrac { 15.35 }{ T } \mathring { A }
\dfrac { 3.64 }{ \sqrt { T } } \mathring { A }
\dfrac ... | $$\dfrac { 30.7 }{ \sqrt { T } } \mathring { A } $$ | general_qa | 267 |
The following is a multiple choice question (with answers).
===Question
What is the order of Galois group $G$ of the polynomial $X^{6}+3$ over the rational number field $\mathbb{Q}$?
===Choices
9
4
8
7
12
11
5
14
6
10 | 6 | general_qa | 74 |
The following is a multiple choice question (with answers).
===Question
In a case-control study, what are the requirements for selecting a control?
===Choices
Among the population from which the cases were derived, some individuals, who had not contracted the disease under study, had factors that could influence the c... | Among the population from which the cases were derived, some individuals, who had not contracted the disease under study, had factors that could influence the condition and were comparable to the case group. | general_qa | 241 |
The following is a multiple choice question (with answers).
===Question
A particle of charge $q$ and mass $m$ starts moving from the origin under the action of an electric field $E = E_oi$ and $B = B_oi$ with a velocity $V = V_oi$.The speed of the article will become $\frac {\sqrt 5}{2} v_o$ after a time
===Choices
$$... | $$\frac{{m{v_0}}}{{qE}}$$ | general_qa | 286 |
The following is a multiple choice question (with answers).
===Question
True or False: In a naive Bayes algorithm, if an attribute value in the testing record does not appear in the training set, the entire posterior probability will be zero.
===Choices
True
None of these
False
Can't be determined | True | general_qa | 64 |
The following is a multiple choice question (with answers).
===Question
In chloroplasts, a certain protein is found in the lumen of the thylakoid (thylakoid space). It is transcribed in the nucleus and synthesized on cytoplasmic ribosomes. How many membrane bilayers must this protein cross to reach its final location?
... | Three | general_qa | 95 |
The following is a multiple choice question (with answers).
===Question
What is the process called when certain extracellular material clumps enter the cell?
===Choices
Pinocytosis
Phagocytosis
Exocytosis
Active transport
Facilitated diffusion
Transcytosis
Receptor-mediated endocytosis
Osmosis
Endocytosis
Diffusion | Endocytosis | general_qa | 81 |
The following is a multiple choice question (with answers).
===Question
Shots are fired simultaneously from the top and bottom of a vertical cliff with the elevation $lpha =30^{o}$, $\beta=60^{o}$, respectively (Fig. A.15). The shots strike an object simultaneously at the same point. If $a=30\sqrt { 3 }\ m$ is the hor... | $$60\ m$$ | general_qa | 172 |
The following is a multiple choice question (with answers).
===Question
What are the three structural elements of a lyrical work?
===Choices
Plot, characters, and theme.
Scenes, acts, and dialogues.
Verse, rhyme, and tempo.
Chapters, paragraphs, and lines.
Metaphor, allegory, and symbol.
Genre, setting, and climax.
Mo... | Sound, imagery, and emotional experience. | general_qa | 110 |
The following is a multiple choice question (with answers).
===Question
What is the name of the statue that Rosemarie Trockel made for the city of Frankfurt in 1994?
===Choices
Frankfurt Engel
Frankfurt Angelos
Frankfurt Engels
Frankfurt Angel
Frankfurt Angelicus
Frankfurter Engel
Frankfurt Angelus
Frankfurt Engelica
... | Frankfurter Engel | general_qa | 91 |
The following is a multiple choice question (with answers).
===Question
Define a normal series to be an expression $a_{1} \pm a_{2} \pm...\pm a_{n}$ , where each $\pm$ is either a $+$ or a $-$ , and the operations are performed in the normal order from left to right. Define a reverse series to be an expression $R: a_{1... | 799 | general_qa | 316 |
The following is a multiple choice question (with answers).
===Question
A submarine has a speed of 3 kn, with the source level around 2 kHz being 110 dB (reference value 1 μPa). The sea state is level 4. The mixed layer thickness is 120 m. Using broadband detection, with a filter center frequency of 2 kHz and a bandwid... | 8.4km | general_qa | 181 |
The following is a multiple choice question (with answers).
===Question
A cooling object was emitting radiations of time varying wavelength $\lambda = 3000 + 40t$, where $\lambda$ is in $\mathring{A}$ and $t$ is in second is incident on a metal sheet (of work function $2eV$) such that the power incident on sheet is con... | $$5A$$ | general_qa | 250 |
The following is a multiple choice question (with answers).
===Question
A concave mirror has radius of curvature of $40 cm$. It is at the bottom of a glass that has water filled up to $5 cm$ (see figure). If a small particle is floating on the surface of water, its image as seen, from directly above the glass, is at a ... | $$8.8cm$$ | general_qa | 181 |
The following is a multiple choice question (with answers).
===Question
At a temperature of 25°C and a total pressure of 101.3 kPa, the Henry's law constant for $mathrm{CO}_2$ is found to be $E = 14.39 \times 10^4$kPa. What is the value of the solubility coefficient $H$ ?(for the symmetric aqueous solution $\rho = 998 ... | $1.42×10^3$ | general_qa | 223 |
The following is a multiple choice question (with answers).
===Question
What is the fundamental effect of heavy ion radiation on organisms?
===Choices
Deep penetration of energy. High cellular impact. Great range scattering. Consistent radiation sensitivity. Stable cellular responses. Boosted natural repair mechanisms... | Special depth dose distribution. High relative biological effectiveness. Small oxygen effect. Small range straggling and lateral scattering. Small differences in radiation sensitivity during various phases of the cell cycle. Reduced repair effect. | general_qa | 366 |
The following is a multiple choice question (with answers).
===Question
The outer walls of a certain warehouse use a strip brick foundation with a wall thickness of 240mm and a foundation depth of 2.0m. The known standard combined value of the upper structure load acting at the foundation top level is 240kN/m. The foun... | 1.04m | general_qa | 194 |
The following is a multiple choice question (with answers).
===Question
A 34-year-old woman, 33 weeks pregnant, has experienced chest tightness and shortness of breath for 2 weeks, which worsened over the past 3 days. She has a history of primary hypertension for more than 10 years and has been taking antihypertensive ... | Actively correct heart failure and terminate the pregnancy | general_qa | 331 |
The following is a multiple choice question (with answers).
===Question
Please prove that the Lorentz force density (the Lorentz force acting on a unit volume of charged material) $\boldsymbol{f}=\rho\boldsymbol{E}+\boldsymbol{J} \times\boldsymbol{B}$ is the first three components of a covariant vector in special relat... | $$
{\frac{\mathrm{i}} {c}} \boldsymbol{J} \cdot\boldsymbol{E}
$$ | general_qa | 363 |
The following is a multiple choice question (with answers).
===Question
An object is projected from ground with speed $20\ m/s$ at angle $30^{o}$ with horizontal. Its centripetal acceleration one second after the projection is [Take $g=10\ m/s^{2}$]
===Choices
$$zero$$
$$10\ m/s^{2}$$
$$5\ m/s^{2}$$
$$11\ m/s^{2}$$
$$... | $$10\ m/s^{2}$$ | general_qa | 165 |
The following is a multiple choice question (with answers).
===Question
Let $y=y \left(x \right)$be such that $y^{\prime}+2 \left(\operatorname{l n} x+1 \right) y=0, y \left(1 \right)=1$, Then the maximum value of $y (x)$ on (0, 1] is ( ).
===Choices
$$3\mathrm{e}^{\frac{2} {\mathrm{e}}}.$$
$$\mathrm{e}^{\frac{3} {\ma... | $$\mathrm{e}^{\frac{2} {\mathrm{e}}}.$$ | general_qa | 282 |
The following is a multiple choice question (with answers).
===Question
Which of the following elements is a major component of seawater?
===Choices
Ca²⁺
SiO₂
Zn²⁺
Mg²⁺
Cu²
Al³⁺
Li⁺
O₂
Fe²⁺
Na⁺ | Ca²⁺ | general_qa | 67 |
The following is a multiple choice question (with answers).
===Question
The coagulation effect of polyaluminium chloride PAC is related to the basicity. The aluminium ion concentration in the solution is 0.02 mmol/L, the hydroxide concentration is 0.03 mmol/L, and the basicity B is _____%.
===Choices
35
60
80
40
70
45... | 50 | general_qa | 104 |
The following is a multiple choice question (with answers).
===Question
A particle of charge q and mass m starts moving from the origin under the action of an electric field $ ec E=E_0\hat i$ and magnetic field $ ec B=B_0\hat k$. Its velocity at (x,0,0) is $(6\hat i+8\hat j)$. The value of x is
===Choices
$$\display... | $$\displaystyle \frac{50 m}{qE_0}$$ | general_qa | 238 |
The following is a multiple choice question (with answers).
===Question
In ancient China, it was called Myeongju-fu, what is the name of its present location?
===Choices
Ningbo
Suzhou
Lishui
Wenzhou
Shaoxing
Hangzhou
Taizhou
Yiwu
Huzhou
Jinhua | Ningbo | general_qa | 78 |
The following is a multiple choice question (with answers).
===Question
What is the function called in statistics that applies different weights when calculating sums, products, or averages?
===Choices
Weighted function application
Weight function
Weighted calculation function
Weighted average function
Weighted distri... | Weight function | general_qa | 83 |
The following is a multiple choice question (with answers).
===Question
Among the three tuning systems, the number of semitone divisions is different. The correct order from high to low should be
===Choices
Just intonation, Twelve-tone equal temperament, Pythagorean tuning
Pythagorean tuning, Twelve-tone equal tempera... | Just intonation, Twelve-tone equal temperament, Pythagorean tuning | general_qa | 98 |
The following is a multiple choice question (with answers).
===Question
A hydroelectric station is equipped with a Francis turbine. The turbine has a design head \(H = 100 \, \text{m}\), cavitation coefficient \(\sigma = 0.2\), and a cavitation safety factor \(K_\sigma = 1.2\). The tailwater level is \(V_T = 1133 \, \t... | -13.76, 1119.84 | general_qa | 309 |
The following is a multiple choice question (with answers).
===Question
In what year was the beetle species Glipa andamana described?
===Choices
1941
1947
1940
1946
1945
1944
1942
1939
1948
1943 | 1941 | general_qa | 80 |
The following is a multiple choice question (with answers).
===Question
In a single transistor common-emitter amplifier circuit, when $f = f_{\mathrm{H}}$, the phase relationship between $U_{\omicron}$ and $U_{\mathrm{i}}$ is ( ).
===Choices
-120°
-315°
-135°
-30°
-45°
-60°
-225°
-90°
180°
-270° | -225° | general_qa | 116 |
The following is a multiple choice question (with answers).
===Question
Which character narrated the last episode of the "One Life to Live" series that aired on January 13, 2012?
===Choices
Allison Perkins
Blair Cramer
Nora Hanen
Jessica Buchanan | Allison Perkins | general_qa | 63 |
The following is a multiple choice question (with answers).
===Question
Suppose $f(x)$ is an invertible function, and suppose that $f(2)=f^{-1}(2)=4$. What is the value of $f(f(2))$?
===Choices
$f(f^{-1}(2))$
16
4
$f(4)$
0
$f^{-1}(4)$
2
1
$f^{-1}(2)$
8 | 2 | general_qa | 97 |
The following is a multiple choice question (with answers).
===Question
The equilibrium potential of a silver chloride electrode Ag|AgCl(s), KCl(0.5 mol/dm$^{3}$) at 25°C is().
===Choices
$$
= 0. 3 5 02 \ \mathrm{V}
$$
$$
= 0. 1 8 75 \ \mathrm{V}
$$
$$
= 0. 3 0 17 \ \mathrm{V}
$$
$$
= 0. 2 8 31 \ \mathrm{V}
$$
$$
= 0.... | $$
= 0. 2 5 08 \ \mathrm{V}
$$ | general_qa | 262 |
The following is a multiple choice question (with answers).
===Question
A 70-year-old female presents to the Emergency Department with altered mental status and fever for five days. The patient complains of lower abdominal pain and dysuria but denies headaches, vomiting, diarrhea, coughing, shortness of breath, or new ... | Sepsis | general_qa | 278 |
The following is a multiple choice question (with answers).
===Question
The vapour density of a volatile chloride of a metal is 74.6. If the specific heat of the metal is 0.55, the atomic mass of the metal is
===Choices
7.22
7.23
7.35
7.2
10
7.46
7.1
7.25
7.3
11.63 | 7.2 | general_qa | 102 |
The following is a multiple choice question (with answers).
===Question
For the definition of a unit cell, which of the following options is correct?
===Choices
The unit cell is a parallelepiped.
The unit cell must have a pair of cross-sections.
The unit cell must be an orthorhombic prism.
The unit cell must be symmet... | The three-dimensional size of the unit cell must be small. | general_qa | 133 |
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