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
A single-cylinder four-stroke diesel engine has the following parameters: cylinder diameter = 100 mm, piston stroke = 110 mm, rated speed = 2000 r/min, friction power = 3.68 kW, mechanical efficiency = 75%, hourly fuel consumption = 2.67 kg/h, and ... | 7.66bar,241.85g/kw*h,0.35 | general_qa | 347 |
The following is a multiple choice question (with answers).
===Question
At a certain intersection, there is an entry lane with a width of 7.0 meters, handling traffic volumes of 450 cars per hour, 94 trucks per hour, and 55 buses per hour. The cycle times are set at 40 seconds, 60 seconds, and 80 seconds, respectively.... | 30.351 seconds per car | general_qa | 243 |
The following is a multiple choice question (with answers).
===Question
To prepare 10 mL of $Na_3$P $^{32}$ $O_{4}$ aqueous solution with a specific radioactivity of $3 \times 10^{4}$ pulses/min·mL, how much $Na_3$P $^{32}$ $O_{4}$ solution with a specific radioactivity of 2.7 millicurie/mL is needed? The counting effi... | $10^{-3}$ milliliters | general_qa | 258 |
The following is a multiple choice question (with answers).
===Question
The location of railway passenger stations in big cities must be deep into the city and should be arranged in ()
===Choices
In the city's administrative center
2-3 kilometers away from the edge of the city
Near city outskirts
Within the city cente... | City center edge | general_qa | 94 |
The following is a multiple choice question (with answers).
===Question
A mixture of hydrogen (component A) and air (component B) at a total pressure of 101.3 kPa and a temperature of 273 K diffuses through a capillary with a diameter of 5 nm and a length of 0.3 m. It is known that the partial pressures of hydrogen at ... | $$
N_{\mathrm{A}}=5. 4 0 3 \times1 0^{-6} \mathrm{~ k m o l / ( m^{2} ~ · ~ s )}
$$ | general_qa | 656 |
The following is a multiple choice question (with answers).
===Question
What is meant by a draft genome of a certain species?
===Choices
Genetic Map
Conclusions derived from single-gene sequencing
High-Density Linkage Map
Analysis limited to non-coding RNA regions
Determination of results obtained from 4-5 times the g... | Determination of results obtained from 4-5 times the genome | general_qa | 111 |
The following is a multiple choice question (with answers).
===Question
What is Adorno's literary theory?
===Choices
Psychological Interpretive Notions
Ethical Moral Views
Cultural Historic Ideology
Social Reflective Narratives
Social Artistic Models
Political Economic Theory
Philosophical Conceptual Framework
Artisti... | Artistic Aesthetic Thought | general_qa | 82 |
The following is a multiple choice question (with answers).
===Question
Which of the following statements is TRUE regarding simple graphs G with |V| ≥ 3?
===Choices
If G is complete, and |V| >2, then G is Hamiltonian and δ(G) > |V|/2
A graph can be Hamiltonian but not have a perfect matching.
A graph can have a perfec... | If δ(G) > |V|/2, then G is a Hamiltonian graph. | general_qa | 240 |
The following is a multiple choice question (with answers).
===Question
Which are large database systems?
I.Sybase
II.Oracle
III.DB2
IV.Access
===Choices
Only I and IV
Only I and III
Only I and II
Only II and III
Only I
Only II
All of the above
Only IV
Only II and IV
Only III | Only II and III | general_qa | 80 |
The following is a multiple choice question (with answers).
===Question
What is the dimensionless set of velocity V, length L, and time t?
===Choices
L/(tV)
t/(LV)
V/(tL)
V/(Lt)
t/(VL)
L/(Vt²)
V/(L²t)
L/(t²V)
t/(L²V)
V/(Lt²) | L/(tV) | general_qa | 85 |
The following is a multiple choice question (with answers).
===Question
The acute toxicity strength of different components of Aconite on mice is in the following order ( ).
===Choices
Water-extracted component > Whole component > Alcohol-extracted component
Water-extracted component > Alcohol component > Whole-extrac... | Alcohol-extracted component > Water-extracted component > Whole component | general_qa | 155 |
The following is a multiple choice question (with answers).
===Question
We now define an algorithm: The definition of a(n) is the sum of Euler's totient function φ(p) for each distinct prime p that divides n. Given the input x_list (a series of values): [72, 73, 74, 75, 76, 77, 78, 79, 80, 81], determine the correspond... | [3, 72, 37, 6, 19, 16, 15, 78, 5, 2] | general_qa | 479 |
The following is a multiple choice question (with answers).
===Question
A liquid rises to a height of $50cm$ in a capillary tube of diameter $0.04mm$. If density of liquid is $0.08\times {10}^{3}kg$ ${m}^{-3}$ angle of contact is ${20}^{o}$, the surface tension of the liquid is ($\cos { { 20 }^{ o } } =0.94)$
===Choic... | $$4.17\times { 10 }^{ -2 }\ \cfrac { N }{ m } $$ | general_qa | 345 |
The following is a multiple choice question (with answers).
===Question
Controlling the proper preload is an important condition to ensure the normal operation of the belt drive, what are the consequences if the preload is insufficient?
===Choices
Excessive pre-tension can result in reduced efficiency only.
Insufficie... | Excessive pre-tension can cause jumping and slipping during operation. | general_qa | 158 |
The following is a multiple choice question (with answers).
===Question
Which of the following complexes exhibits the highest paramagnetic behaviour? (Where gly = glycine,en= ethylenediamine and bpy = bipyridyl moities).
(At number Ti = 22, V = 23, Fe = 26, Co = 27 )
===Choices
[Co(OX)_3(H_2O)]^-
[Co(OX)_2(OH)_3]^-
$... | $$ [Co(OX)_2(OH)_2]^- $$ | general_qa | 223 |
The following is a multiple choice question (with answers).
===Question
A group of mountain climbers set up camp at a 3 km altitude and experience a barometric pressure of 0.69 atm. They discover that pure water boils at 90°C and that it takes 300 minutes of cooking to make a "three-minute" egg. What is the ratio of th... | 100 | general_qa | 130 |
The following is a multiple choice question (with answers).
===Question
In SQL/CLI, the information about saving tuples or parameters is stored in ___.
===Choices
Query Archive
Data Unit
Description Record
Record Structure
Information Log
Element Schema
Schema Set
Parameter Snapshot
Variable Store
Backup Register | Description Record | general_qa | 63 |
The following is a multiple choice question (with answers).
===Question
The coupling reaction is an aromatic electrophilic substitution reaction, so the coupling activity is high when the diazonium salt has a ____ on the aromatic nucleus.
===Choices
non-reactive side chain
electron-withdrawing substituent
charged alky... | electron-withdrawing substituent | general_qa | 107 |
The following is a multiple choice question (with answers).
===Question
To resolve the mode structure of a nitrogen laser beam with a wavelength of $632.8 nm$ in the first-order spectrum of a grating with $1200$ lines per millimeter (where the frequency difference between two modes is $450 MHz$), how wide does the grat... | $878mm$ | general_qa | 145 |
The following is a multiple choice question (with answers).
===Question
What are the two types of clouds that()? clouds are a variation of?
===Choices
Altocumulus and Cirrostratus
Altocumulus and Cumulonimbus
Altocumulus and Cirrus
Altocumulus and Stratocirrus
Altocumulus and Altostratus
Altostratus and Stratocumulus
... | Altocumulus and Stratocumulus | general_qa | 126 |
The following is a multiple choice question (with answers).
===Question
What are the components of the steady-state error of the control system?
===Choices
Feedback inconsistency and input variance
Operational shift and balance error
Response lag and operational delay
Response offset and signal mismatch
Control discre... | Following error and disturbance error | general_qa | 94 |
The following is a multiple choice question (with answers).
===Question
Given: The concentration of argon in the atmosphere is much higher than that of other inert gases, which can be explained by the decay of the naturally radioactive element $\mathbf{K}^{40}$ to
$$
(\mathrm{Ar}^{40})
$$
. In argon, 99.63% of the comp... | $$
\sim1. 6 \%
$$ | general_qa | 348 |
The following is a multiple choice question (with answers).
===Question
Given that $x(n)$ is a finite-length sequence with $N$ points, and $X(k) = \operatorname{DFT}[x(n)]$. Now, by inserting $r-1$ zero points between every two points of $x(n)$, a finite-length sequence $y(n)$ with $rN$ points is obtained:
$$
y(n) = \l... | $$
Y ( k )=X \left( ( k ) \right)_{N} R_{r N} ( k )
$$ | general_qa | 502 |
The following is a multiple choice question (with answers).
===Question
Saturated steam of pure water at a temperature of 50°C condenses on the outside of a vertical tube bundle with an outer diameter of 25.4 mm. The temperature difference between the steam and the tube wall is 11°C, with each tube being 1.5 m long and... | $326.2kW$ | general_qa | 189 |
The following is a multiple choice question (with answers).
===Question
The physical entity of a building generally consists of ( ), enclosure structures, decorative finishes, and attached components.
===Choices
secondary supporting designs
load-bearing structure
external architectural elements
basic construction mode... | load-bearing structure | general_qa | 78 |
The following is a multiple choice question (with answers).
===Question
______refers to the vertical differentiation or stratification phenomenon of a community in space.
===Choices
Horizontal layering
Sectoral distribution
Layered complexity
Vertical diversity
Spatial stratification
Environmental scaff
Ecosystem patt... | Vertical structure | general_qa | 70 |
The following is a multiple choice question (with answers).
===Question
For which positive integers $n$ can there exist positive numbers $x_{1}, x_{2}, \cdots, x_{n}$ satisfying the system of equations
$x_{1}+x_{2}+\cdots+x_{n}=3 \,, {\frac{1} {x_{1}}}+{\frac{1} {x_{2}}}+\cdots+{\frac{1} {x_{n}}}=3$?
===Choices
6,7
3,... | 2,3 | general_qa | 149 |
The following is a multiple choice question (with answers).
===Question
What is the water flow rate $q_{V}$ when water at 15°C flows through a riveted steel pipe with a diameter of $d=300 \ \mathrm{mm}$, given that the absolute roughness $\Delta=3\ \mathrm{mm}$, and the head loss over a pipe length of $l=300\ \mathrm{m... | $$
0. 1 2 4 5 {{\mathrm{m}}^{3}} / {\mathrm{s}}
$$ | general_qa | 390 |
The following is a multiple choice question (with answers).
===Question
A factory plans to produce two kinds of products, A and B, and the equipment time, raw materials A and B, the profits that can be obtained, and the amount of resources available for each set of products are shown in the following table. The plan sh... | Production of 1 set of A and 4 sets of B | general_qa | 280 |
The following is a multiple choice question (with answers).
===Question
During which period did the government transition from "night watchman" to "social dominator"?
===Choices
Post-industrial Revolution Period
The Time of Global
Pre-capitalist era
The Age of Early Capitalism
The Era of Free Capitalism
The Era of Fre... | Monopoly Capitalism Era | general_qa | 98 |
The following is a multiple choice question (with answers).
===Question
A certain multi-byte channel device has a selection time of \( T_S = 9.8 \, \mu s \), and the time required to transfer one byte of data is \( T_D = 0.2 \, \mu s \). If a low-speed external device sends requests at a rate of one request every 500 \... | 50 | general_qa | 140 |
The following is a multiple choice question (with answers).
===Question
The constitutional amendment adopted at the first session of the 13th National People's Congress in 2018 was the first to be written into the Constitution is ()
===Choices
Mao Zedong Thought
Xi Jinping Thought on Socialism with Chinese Characteris... | Xi Jinping Thought on Socialism with Chinese Characteristics for a New Era | general_qa | 201 |
The following is a multiple choice question (with answers).
===Question
Let $P_{n}(x)$ be the n-th order Taylor polynomial of $f(x) = \cos(x)$ about $a = 0$. Find the minimum $n$ such that the approximation $f(x) \approx P_{n}(x)$ is accurate to within $0.00001$ for every value of $x$ satisfying $|x| \le 0.1$.
===Choi... | 3 | general_qa | 124 |
The following is a multiple choice question (with answers).
===Question
A certain type of high school student overestimates their understanding and evaluation of the real me, leading to delusional judgments, while the ideal me is also false. As a result, they exhibit extreme self-admiration and arrogance. This type of ... | Self-expansive Type | general_qa | 137 |
The following is a multiple choice question (with answers).
===Question
The Bohr radius of the fifth electron of phosphorous atom (atomic number $= 15)$ acting as a dopant in silicon (relative dielectric constant $= 12)$ is __________ $A^{\circ}$.
===Choices
1.8\ A^{0}
$4.8\ A^{0}$.
2.8\ A^{0}
5.8\ A^{0}
7.8\ A^{0}
9.... | $3.8\ A^{0}$. | general_qa | 154 |
The following is a multiple choice question (with answers).
===Question
The ball is projected upward by a gun. The ball passes the electronic gets $1$ and $2$ as it rises and again as it falls. Each get is connected to a separate timer. The passage of the ball through each gate starts the corresponding timer, and the s... | $$8\ m{ s }^{ -2 }$$ | general_qa | 283 |
The following is a multiple choice question (with answers).
===Question
1 molal aqueous solution of an electrolyte $AB_{2}$ is 80% ionized into $A^{+2}$ and $B^{-}$ ions. The boiling point of the solution at 1 atm is:
$[K_{b(H_{2}O)}= 0.5Kg mol^{-1}]$
===Choices
274.3 K
374.3 K
273.5 K
273.3 K
273.8 K
375.3 K
27... | 374.3 K | general_qa | 166 |
The following is a multiple choice question (with answers).
===Question
A massless piston, which can move without friction, closes a sample of helium in a vertical, thermally insulated cylinder, which is closed at its bottom, and the cross-section of which is $A= 2dm^2$.Above the piston there is a fixed stand to which ... | 1000 J | general_qa | 240 |
The following is a multiple choice question (with answers).
===Question
________nonlinear polarization is the basis for frequency doubling and optical parametric oscillation, while optical phase conjugation is based on______ nonlinear polarization.
===Choices
Sixth-order; fourth-order
Fifth-order; first-order
Third-or... | Second-order; third-order | general_qa | 109 |
The following is a multiple choice question (with answers).
===Question
The _____refers to the front end of the barnacle's body, which is relatively wide and large, including the head and thorax.
===Choices
upper segment
medial aspect
external zone
posterior section
dorsal region
central division
lateral area
peripher... | anterior part | general_qa | 83 |
The following is a multiple choice question (with answers).
===Question
What is the first-order simplification of the dispersion equation called?
===Choices
The primary rule
The fundamental rule
The cardinal expression
The basic simplification
The initial formula
The initial implication
The primary equation
The essent... | The equilibrium equation | general_qa | 70 |
The following is a multiple choice question (with answers).
===Question
What reacts with isoxazolidine iron to turn red?
===Choices
basic steroids
phenylpropanoids
basic flavonoids
alkaloids
simple coumarins
complex esters
terpenes
natural glucosides
simple ketones
aromatic acids | simple coumarins | general_qa | 73 |
The following is a multiple choice question (with answers).
===Question
A man committed a series of heinous crimes, including a kidnapping, that took him across state lines and violated federal law. He was convicted and received a life sentence. The felon, however, was pardoned by the President of the United States, wh... | No. While what the president did wasn't a good idea, the Constitution expressly grants the President an unqualified power to pardon. | general_qa | 245 |
The following is a multiple choice question (with answers).
===Question
Which of the following is a characteristic sign of joint dislocation?
===Choices
Deformity, elastic fixation, joint hollowing
Bruising, constant ache, joint swelling
Tightening, continuous pain, joint immobility
Crepitus, restricted movement, join... | Deformity, elastic fixation, joint hollowing | general_qa | 132 |
The following is a multiple choice question (with answers).
===Question
The dissociation vapour pressure (the pressure of gaseous products in equilibrium with the solid reactant) of NH,CI at 427C is 608 kPa but at 459°C it has risen to 1115 kPa. Calculate the equilibrium constant.
===Choices
$$
{6. 9 1}
$$
$$
{4 7. 2 ... | $$
{9. 2 4}
$$
$$
{3 1. 0 8}
$$ | general_qa | 339 |
The following is a multiple choice question (with answers).
===Question
The short-term impact of fiscal policy on output depends on the economic environment. Which of the following situations does fiscal policy have the greatest short-term impact on output?
===Choices
Money demand is insensitive to interest rates, whi... | Money demand is insensitive to interest rates, while investment is sensitive to interest rates | general_qa | 206 |
The following is a multiple choice question (with answers).
===Question
Subtropical evergreen broadleaf forests in the reserve include ( ) and semi-wet evergreen broadleaf forests.
===Choices
year-round wet broad-leaved jungle
perennial moist broad-leaved woodland
monsoon evergreen broad-leaved forest
semi-arid broad-... | monsoon evergreen broad-leaved forest | general_qa | 126 |
The following is a multiple choice question (with answers).
===Question
The following electrode reactions are known
$\mathrm{C r O_{4}^{2-}+4 H_{2} O+3 e^{-} \Longrightarrow C r ( O H )_{3}+5 O H^{-} \qquad\varphi^{\Theta} = -0. 1 1 ~ V}$
Try to calculate $K^{\Theta}$__ for the following reaction.
$\mathrm{C r O_{4}^{2... | $3. 1 \times1 0^{3 6}$ | general_qa | 318 |
The following is a multiple choice question (with answers).
===Question
Which of the following statements most accurately
summarizes the impact of Brown $v$ . Board of Education (1954)?
===Choices
The decision had an immediate and profound impact, eliminating segregation overnight.
Integration efforts were completed i... | Almost no progress was made toward the integration of southern schools until passage of the Civil Rights Act of 1964... | general_qa | 202 |
The following is a multiple choice question (with answers).
===Question
Diving usually refers to shallow groundwater, which is affected by various external factors. Temperature, wind speed, and other factors influence diving's _____, causing the amount of water to decrease, water level to _____, and water quality to___... | Evaporation, Reduction, Salinization | general_qa | 152 |
The following is a multiple choice question (with answers).
===Question
A 24-m-thick layer of sand is underlain by bedrock. The groundwater table is located at a depth of 4 m below the ground surface. Estimate the maximum shear modulus and damping ratio of the sand at a depth of 12 m below the ground surface considerin... | 0.098 | general_qa | 182 |
The following is a multiple choice question (with answers).
===Question
Titrate $\mathrm{Pb}^{2+}$ at the same concentration with $2 \times 10^{-4} mol/L$ EDTA at pH 5.0, using xylenol orange as an indicator. Control acidity with an HAc-NaAc buffer solution where $[\text{HAc}] = 0.2 \text{ mol/L}$ and $[\text{Ac}^-] = ... | $$
- 0. 1 \%
$$ | general_qa | 228 |
The following is a multiple choice question (with answers).
===Question
A 24-year-old pregnant woman. At 36 weeks of G1P0 intrauterine pregnancy, she has experienced lower limb edema for 8 months, generalized edema for the past week, dizziness, headache, and blurred vision in the last 24 hours. She had a sudden seizure... | Post-dural puncture headache after spinal anesthesia cesarean section | general_qa | 337 |
The following is a multiple choice question (with answers).
===Question
The genetic traits, _________, and development stages of plants determine their responsiveness to abiotic and biotic factors from the external environment.
===Choices
atmospheric pressures
evolutionary origins
soil composition types
survival mecha... | physiological conditions | general_qa | 84 |
The following is a multiple choice question (with answers).
===Question
To use a 7-bit Barker code as a group synchronization code, with a bit error rate of $1 \times 10^{-4}$, find the probability of synchronization loss when the allowable number of error codes is 0 and 1, respectively.
===Choices
$$
2. 0 9 9 3 \time... | $$
2. 0 9 9 3 \times1 0^{-7}
$$ | general_qa | 289 |
The following is a multiple choice question (with answers).
===Question
Where was epidote initially found in which volcano's lava?
===Choices
Vesuvius
Etna
Stromboli
Mount Vesuvius (ancient site)
Mount Vesuvius
Mount Vesuvius (modern site)
Mount Stromboli
Mount Fuji
Mount Etna
Mount Vesuvius (historical site) | Vesuvius | general_qa | 87 |
The following is a multiple choice question (with answers).
===Question
Find the $z$-transform of the following sequence, and determine its corresponding zeros, poles, and region of convergence is ().
$x(n) = a^{|n|}, \quad 0 < |a| < 1$
===Choices
$$\mid z\mid> a$$ Poles: $z= -a$, $z= a$ Zeros: $z= \frac1{a}$, $z= 0$
... | $$\mid a\mid<\mid z\mid<\frac1{\mid a\mid}$$
Poles: $z= a$, $z= \frac 1a$
Zeros: $z= 0$, $z= \infty$ | general_qa | 528 |
The following is a multiple choice question (with answers).
===Question
Samples ${X_1},{X_2},...,{X_{12}}$ and ${Y_1},{Y_2},...,{Y_{12}}$ are drawn from two production lines of a factory, with measured values $overline X$ =10.6 (g), $overline Y$ =9.5 (g), $s_1^2$ =2.4, $s_2^2$=4.7. Assuming the means of the two normal ... | $(-0.40,2.60)$ | general_qa | 272 |
The following is a multiple choice question (with answers).
===Question
What were the month, date, and year when the South Korean Supreme Court legalized conscientious objection as a basis for rejecting compulsory military service?
===Choices
November 1, 2019
November 1, 2017
November 1, 2016
November 1, 2015
November... | November 1, 2018 | general_qa | 104 |
The following is a multiple choice question (with answers).
===Question
The correct information regarding a solid element (atomic radius $=r$) having $ABCABC....$ type packing (FCC unit cell edge length $=a$) is:
===Choices
the distance between successive A and B layers is \( 2r.\sqrt { \cfrac { 3 }{ 2 } } \)
the dist... | the distance between successive A and B layers is $2r.\sqrt { \cfrac { 2 }{ 3 } } $ | general_qa | 343 |
The following is a multiple choice question (with answers).
===Question
To increase the workability of the concrete mix, which of the following measures is the most effective?
===Choices
Add extra coarse aggregate
Use a vibrating compactor intensively
Add more superplasticizer without limits
Add cement paste (W/C rati... | Add water-reducing agent | general_qa | 109 |
The following is a multiple choice question (with answers).
===Question
The physician who established the 'Three Causes Theory' is ______.
===Choices
Jin Baoqing
Huang Xinxu
Zuo Wenhui
Bao Shiren
Li Dacheng
Chen Wuze
Zhang Mingyan
Dong Ji
Yan Tianyu
Ge Kejiu | Chen Wuze | general_qa | 81 |
The following is a multiple choice question (with answers).
===Question
On what date, month, and year did Pakistani President Arif Alvi confer Nishan-e-Pakistan on Syed Ali Shah Geelani to recognize his decades-long struggle for Kashmiris' right to self-determination?
===Choices
August 10, 2020
August 12, 2020
August ... | August 14, 2020 | general_qa | 172 |
The following is a multiple choice question (with answers).
===Question
The open-loop transfer function of a unit feedback system is $G(s) = \frac{1}{s+1}$. Based on the physical meaning of frequency characteristics, determine the steady-state output $c_{ss}$ and steady-state error $e_{ss}$ of the system when the input... | $c_{ss}(t) = \frac{\sqrt{2}}{4} \sin(2t - 45^\circ)$
$e_{ss}(t) = \frac{\sqrt{10}}{8} \sin(2t - 71.57^\circ)$ | general_qa | 700 |
The following is a multiple choice question (with answers).
===Question
The two banks of the river are parallel to each other. A small boat departs from point $A$, heading in a direction perpendicular to the bank. After setting off, it reaches the opposite bank in 10 minutes, at which time the boat's position $C$ is 12... | $$200m,20m/min, 12m/min$$ | general_qa | 350 |
The following is a multiple choice question (with answers).
===Question
What is "improvisation" in the practice of music performance?
===Choices
a performance that is scheduled in advance
a performance guided by audience prompts
a performance that is composed at random
a performance rehearsed extensively before
a perf... | a performance that is composed at random | general_qa | 104 |
The following is a multiple choice question (with answers).
===Question
Two concepts commonly used by game designers creating interactive stories are non-linear and ______ storytelling.
===Choices
Dynamic
Passive
Linear
Circular
Static
Binary
Complex
Active
Direct
Simple | Linear | general_qa | 54 |
The following is a multiple choice question (with answers).
===Question
At 298K, 98.69kPa, and $1m^3$ air, the partial pressure of water vapor is 2.928kPa If this air is cooled to 288K under equal pressure, some water vapor will condense, and the partial pressure of water vapor in the condensed air will be 1.6921 kPa W... | 954dm³ | general_qa | 170 |
The following is a multiple choice question (with answers).
===Question
Which of the following warehousing methods can minimize the risk of goods being lost to the greatest extent?
===Choices
Centralized
Distributed
Isolated
Virtual
Decentralized
Hierarchical
Fragmented
Condensed
Segregated
Rotational | Centralized | general_qa | 67 |
The following is a multiple choice question (with answers).
===Question
What is the number of iterations required in total to generate all the sub-keys in blowfish?
===Choices
420
789
256
521
300
512
456
640
1024
128 | 521 | general_qa | 76 |
The following is a multiple choice question (with answers).
===Question
In the cylinder-piston system, there are 3 $\mathbf{kg}$ of $O_{2}$ at a pressure of 1 MPa and a temperature of 27 C. The gas in the cylinder is heated to 327 C, and at this point, the pressure is 1500 kPa. Due to the external spring on the piston,... | $$
689.7 \mathrm{kJ}
$$ | general_qa | 332 |
The following is a multiple choice question (with answers).
===Question
If a and b are mutations of different alleles, the phenotypes for the genotypes ab /++ and a+/+b are respectively ___.
===Choices
Wild-type and Mutant Type
Normal Form and Wild-type
Variant Form and Wild-type
Normal Form and Mutant Type
Regular Fo... | Wild-type and Mutant Type | general_qa | 111 |
The following is a multiple choice question (with answers).
===Question
A particle of mass 1 kg is moving in the $x- y$ plane and its potential energy $U$ in joule obeys the law $U = 6x + 8y$, where ($x,y$) are the coordinates of the particle in meter. If the particle starts from rest at (9,3) at time $t = 0$, then
==... | The speed of the particle when it crosses y axes is $10 \sqrt{3}\ m/s$ | general_qa | 279 |
The following is a multiple choice question (with answers).
===Question
Low immune stability of the body can lead to ().
===Choices
Cellular Impairment Function
Immunodeficiency Disease
Cellular Immunodeficiency
Immune Proliferation Disease
Cellular regeneration disorder
Overactive Immune System
Organ Dysfunction
Mali... | Autoimmune Disease | general_qa | 83 |
The following is a multiple choice question (with answers).
===Question
Air behaving as an ideal gas at 25 Bar and 50°C enters a converging nozzle having the exit cross-sectional area 6×10^-4 m^2 with negligible initial velocity. The flow is isentropic. Calculate the mass flow rate (Kg/sec) and the linear velocity (m/s... | a) 3.42 kg/sec, 295 m/sec, b) 3.48 kg/sec, 335 m/sec | general_qa | 483 |
The following is a multiple choice question (with answers).
===Question
Within the range of ±45° on the equatorial plane, what percentage of the total radiation power is the radiation power of the electric fundamental oscillator?
===Choices
89.47%
72.10%
81.65%
85.30%
78.93%
92.74%
67.51%
84.22%
95.17%
88.39% | 88.39% | general_qa | 108 |
The following is a multiple choice question (with answers).
===Question
What is the type of finite singularity of the function $f(z) = \sin \frac{1}{z-1}$?
===Choices
Integral Singularity
Discrete Continuity
Annular Point Singularity
Removable Discontinuity
Regular Singularity
Transcendental Singularity
Intrinsic Sing... | Intrinsic Singularity | general_qa | 99 |
The following is a multiple choice question (with answers).
===Question
Steam enters a converging-diverging nozzle at 2 MPa and 400°C with a negligible velocity and a mass flow rate of 2.5 kg/s, and it exits at a pressure of 300 kPa. The flow is isentropic between the nozzle entrance and throat, and the overall nozzle ... | 10.33 cm², 18.21 cm², 1.002, 1.804 | general_qa | 435 |
The following is a multiple choice question (with answers).
===Question
What type of engine does the Japanese Type 89 torpedo, completed in 1984, use?
===Choices
Swash-plate rotary piston engine
Swash-plate piston engine
Reciprocating swash-plate engine
Swash-plate reciprocating piston engine
Swash-plate reciprocating... | Swash-plate piston engine | general_qa | 121 |
The following is a multiple choice question (with answers).
===Question
Figure shows a wheel barrow of mass $15 \ kg$ carrying a load of $30 \ kgf$ with its centre of gravity at $A$. The points $B$ and $C$ are the centre of wheel and tip of the handle such that the horizontal distance $AB=20 \ cm$ and $AC=40 \ cm$. Wha... | $$15\,kgf$$ | general_qa | 203 |
The following is a multiple choice question (with answers).
===Question
Two weights, one 10N and the other 5N, are suspended at different positions on the same rope, with the heavier one hanging lower and the lighter one hanging higher. Assuming the top of the rope is fixed, what is the tension in the rope?
===Choices... | $$
1 0 \mathrm{~ N},1 5 \mathrm{~ N}
$$ | general_qa | 274 |
The following is a multiple choice question (with answers).
===Question
In a countercurrent operation absorption tower, ammonia is absorbed from a mixed gas of ammonia and air. The flow rate of the mixed gas per unit tower cross-section is $0.036\mathrm{kmol} / ({m^{2}} \cdot\mathrm{s} )$, containing 2% ammonia (by vol... | 5.02m | general_qa | 281 |
The following is a multiple choice question (with answers).
===Question
When establishing windbreaks along the coast, it is important to choose tree species with_______.
===Choices
Brightly colored leaves
Dense foliage
Shallow root systems
Low water requirements
Deep root systems
High water requirements
Thin bark
Shor... | Deep root systems | general_qa | 78 |
The following is a multiple choice question (with answers).
===Question
Water is fed into the boiler at a state of $p_{1}=10 \, \mathrm{MPa}$ and $t_{1}=220 \, \mathrm{C}$, and is heated at constant pressure until reaching $t_{2}=550 \, \mathrm{C}$, producing steam that exits the boiler. Calculate the amount of heat ab... | $$
2 5 5 3. 3 9 \mathrm{~ k J / k g}
$$ | general_qa | 365 |
The following is a multiple choice question (with answers).
===Question
Let's consider a thermal detector with a photosensitive area $A_{\mathrm{d}}=1 \, \mathrm{mm}^2$, operating temperature $T=300 \, \mathrm{K}$, and working bandwidth $\Delta f=10 \, \mathrm{Hz}$(Stefan-Boltzmann constant $\sigma=5.67 \times 10^{-12}... | $$
1. 7 4 {\times} 1 0^{-1 1} \mathrm{W}
$$ | general_qa | 477 |
The following is a multiple choice question (with answers).
===Question
A copper ring with a radius of $ r=100 \mathrm{cm} $ and a cross sectional area of $ A=4 \mathrm{mm}^{2} $ is to be fitted on to a steel rod with a radus $ R=100.125 \mathrm{cm} $. With what force F will the ring the be expanded if the modulus... | $
\frac{600}{27} \times N
$ | general_qa | 263 |
The following is a multiple choice question (with answers).
===Question
What is the magnitude of the interaction force between two dipoles separated by a distance $r$, with dipole moments $\boldsymbol{p}_{1}$ and $\boldsymbol{p}_{2}$ aligned parallel to their connecting line?
===Choices
$$F={\frac{3 \, p_{1} \, p_{2}}... | $$
F={\frac{3 \, p_{1} \, p_{2}} {2 \pi\varepsilon_{0} \, r^{4}}}
$$ | general_qa | 427 |
The following is a multiple choice question (with answers).
===Question
The earliest practitioner of film montage was ( ).
===Choices
Lang
Renoir
Lumière
Méliès
Pudovkin
Griffith
Gance
Vertov
Chomón
Eisenstein | Griffith | general_qa | 62 |
The following is a multiple choice question (with answers).
===Question
Who is considered the most important American playwright of the 20th century?
===Choices
Shepard
Albee
Williams
Wilder
Mamet
O'Neal
Miller
Wilson
Hellman
Simon | O'Neal | general_qa | 60 |
The following is a multiple choice question (with answers).
===Question
In 2011, during the Hands Across Hawthorne rally, which followed Brad Forkner's speech and Basic Rights Oregon's call for volunteers for the Queer Patrol, which Beatles song did the crowd sing?
===Choices
"With a Little Help from My Friends"
"I Wa... | "I Want to Hold Your Hand" | general_qa | 131 |
The following is a multiple choice question (with answers).
===Question
Among the following composite tunnel monitoring measurement items, the optional measurement item is ().
===Choices
Soil moisture content
Tunnel surface vibrations
Structural stress analysis
Internal and external forces of the steel frame
Soil temp... | Internal and external forces of the steel frame | general_qa | 81 |
The following is a multiple choice question (with answers).
===Question
Which will be the least stable resonating structure:
===Choices
$$CH_2=CH - \overset{\delta Y}{C}H - \overset{\circleddash}{C}H - O - CH_3$$
$$CH_2=CH - \overset{\circleddash}{C}H - \overset{\ominus}{C}H - O - CH_3$$
$$CH_2=CH - \overset{\circledd... | $$CH_2=CH - \overset{\oplus}{C}H - \overset{\circleddash}{C}H - O - CH_3$$ | general_qa | 354 |
The following is a multiple choice question (with answers).
===Question
For two-dimensional problems, the number of grid systems under staggered grid technology is ( ).
===Choices
Eight sets
Two sets
Three sets
Four sets
Ten sets
Six sets
Nine sets
Five sets
Seven sets
One set | Three sets | general_qa | 64 |
The following is a multiple choice question (with answers).
===Question
In a certain steam power plant, the boiler supplies steam to a steam turbine at a rate of 40t/h. The pressure gauge at the inlet reads 9 MPa, and the specific enthalpy of the steam is 3441 kJ/kg. The vacuum gauge at the steam turbine outlet reads 0... | $$
12985kW
$$ | general_qa | 299 |
The following is a multiple choice question (with answers).
===Question
A solution is 1 molar in each of \( \text{NaCl} \), \( \text{CdCl}_2 \), \( \text{ZnCl}_2 \), and \( \text{PbCl}_2 \). To this, Sn metal is added. Which of the following is true?
Given:
\[
E^\circ_{\text{Pb}^{2+}/\text{Pb}} = -0.126 \, \text{V}, \q... | Sn can reduce $Pb^{+2}$ to $Pb$ | general_qa | 397 |
The following is a multiple choice question (with answers).
===Question
The cannon fires a projectile at an elevation angle $\alpha$ and an initial speed $v_{0}$. Assuming no air resistance, the trajectory curve is ().
===Choices
$$\left\{ \begin{array}{l}
x = v_{0} \cos \alpha \cdot 2t, \\
y = v_{0} \sin \alpha \cdot... | $$\left\{ \begin{array}{l}
x = v_{0} \cos \alpha \cdot t, \\
y = v_{0} \sin \alpha \cdot t - \frac{g}{2} t^{2}.
\end{array} \right.$$ | general_qa | 671 |
The following is a multiple choice question (with answers).
===Question
On the crystal slip plane, there is a dislocation loop. Given a shear stress $\tau$ applied in the direction of its Burgers vector, what is the minimum radius required for the dislocation loop to be stable within the crystal?
===Choices
$$
r_{c}={... | $$
r_{c}={\frac{a G b} {\tau}}
$$ | general_qa | 269 |
The following is a multiple choice question (with answers).
===Question
A 59-year-old woman with a past medical history of atrial fibrillation currently on warfarin presents to the emergency department for acute onset dizziness. She was watching TV in the living room when she suddenly felt the room spin around her as s... | Decreased gag reflex | general_qa | 231 |
The following is a multiple choice question (with answers).
===Question
A contraceptive "X" is used by 100 couples for continuous period of 2 years. During this period 20 women become pregnant despite using contraceptive "X". What is the pearl index of contraceptive "X"?
===Choices
20 per HWY
0.1 per HWY
1000 per HWY
... | 10 per HWY | general_qa | 121 |
The following is a multiple choice question (with answers).
===Question
A cylinder, fitted with piston, contains a diatomic gas at temperature $T_{1} = 27^{\circ}C$. Initially, the height of the piston from the base of the cylinder is $h_{1} = 20 cm$ as shown in the figure. When the temperature is raised to $T_{2} = 17... | $$h_{2} = 30 cm$$ | general_qa | 289 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.