problem stringlengths 14 4.09k | solution stringlengths 1 802k | task_type stringclasses 3
values | problem_tokens int64 5 895 |
|---|---|---|---|
The following is a multiple choice question (with answers).
===Question
The coefficient of static and kinetic friction between the two blocks and also between the lower block and the ground are $\mu_s= 0.6$ and $\mu_k= 0.4$. Find the value of tension $T$ applied on the lower block at which the upper block begins to sli... | $$40 N$$ | general_qa | 142 |
The following is a multiple choice question (with answers).
===Question
If radius vector of a point varies with time $t$ as $\vec { r } =\vec { b } t\left( 1-\alpha t \right) $ where $\vec { b } $ is a constant vector and a is a positive constant, then its
===Choices
Magnitude of acceleration is changing but direction... | Magnitude of acceleration is constant but direction of acceleration is changing | general_qa | 161 |
The following is a multiple choice question (with answers).
===Question
During isovolumetric contraction period: ( ).
===Choices
Atrial pressure > Ventricular pressure > Aortic pressure
Atrial pressure < Ventricular pressure > Aortic pressure
Pulmonary pressure < Ventricular pressure < Aortic pressure
Ventricular pres... | Atrial pressure < Ventricular pressure < Aortic pressure | general_qa | 148 |
The following is a multiple choice question (with answers).
===Question
Which chief director is responsible for the 'Máo Xuě Wáng' program?
===Choices
Chen Hao
Wang Ling
Peng Ming
Li Na
Li Wei
Liu Yang
Liu Ling
Peng Ling
Wang Ming
Chen Ling | Peng Ling | general_qa | 71 |
The following is a multiple choice question (with answers).
===Question
When the pores are filled with water, what is the velocity V of the sandstone? Given: the velocity of the sandstone matrix Vm = 5200 m/s, the velocity of water Vwater = 1500 m/s, Φ = 0.2.
===Choices
3482m/s
3700m/s
3550m/s
3950m/s
3425m/s
3650m/s
... | 3482m/s | general_qa | 147 |
The following is a multiple choice question (with answers).
===Question
Cotton, hemp fiber is composed of (), so they are more resistant to alkali; wool, silk, the main constituent material is () so they are more resistant to acid.
===Choices
Carbohydrates, fatty acids
Fibrin, carbohydrates
Graphene, cellulose
Peptide... | Cellulose, Protein | general_qa | 118 |
The following is a multiple choice question (with answers).
===Question
There is a binary cascade refrigeration unit, the refrigerant in the low temperature department uses freON-13, $t_0$= -75°C, $t_k$= -25°C, and the temperature of the liquid refrigerant in front of the expansion valve is -28°C. The refrigerant in th... | 1.345 | general_qa | 229 |
The following is a multiple choice question (with answers).
===Question
What is the o index of calc-alkaline series rocks?
===Choices
σ>9
σ≥3.3
σ<3.3
σ≠3.3
σ=3.1
σ<9
σ=9
σ>3.3
"σ=3.3-9
σ≤9 | σ<3.3 | general_qa | 85 |
The following is a multiple choice question (with answers).
===Question
Evaluate \begin{gather*} \int_0^\infty \left(x-\frac{x^3}{2}+\frac{x^5}{2\cdot 4}-\frac{x^7}{2\cdot 4\cdot 6}+\cdots\right) \\ \left(1+\frac{x^2}{2^2}+ \frac{x^4}{2^2\cdot 4^2}+\frac{x^6}{2^2\cdot 4^2 \cdot 6^2}+\cdots\right)\,dx. \end{gather*}
==... | \sqrt{e} | general_qa | 204 |
The following is a multiple choice question (with answers).
===Question
What kind of work can enable more readers to use the library's collection of books and expand the scope of library circulation?
===Choices
Local art exhibitions
Social media campaigns
Book donation drives
Volunteer tutoring programs
Mobile library... | Outside circulation | general_qa | 82 |
The following is a multiple choice question (with answers).
===Question
______ are used as the base of the Public Key Infrastructure.
===Choices
RSA certificates
PGP certificates
HAS certificates
TLS certificates
X.509 certificates
SHA certificates
ECC certificates
DSA certificates
SSL certificates
AES certificates | X.509 certificates | general_qa | 65 |
The following is a multiple choice question (with answers).
===Question
As shown in the figure, in a lead sphere with radius $R$ and mass $\mathbf{M}$, a spherical cavity with a radius of ${\frac{1}{2}} R$ is excavated. At a location distance $d$ from the center $O$ of the sphere, there is a particle with mass $m$. The... | $$
G M m [ \frac{1} {d^{2}}-\frac{1} {8 ( d-\frac{R} {2} )^{2}} ]
$$ | general_qa | 497 |
The following is a multiple choice question (with answers).
===Question
The genome of the virus can be ( ).
===Choices
ssRNA, dsDNA, dsRNA, ssDNA
ssRNA, dsRNA, dsRNA, dsDNA
dsDNA, ssDNA, dsRNA, ssRNA
ssDNA, dsDNA, ssRNA, dsRNA
ssRNA, dsDNA, ssDNA, dsRNA
dsRNA, ssDNA, ssRNA, dsDNA
dsRNA, ssRNA, ssDNA, dsDNA
dsDNA, ssRN... | dsDNA, ssDNA, dsRNA, ssRNA | general_qa | 145 |
The following is a multiple choice question (with answers).
===Question
The minimum value of the function \( f(x) = \begin{cases} \frac{x^2}{4} + \frac{x}{2} - \frac{15}{4}, & x < 0 \\ x^3 - 6x^2 + 8x, & x \ge 0 \end{cases} \) on \( (-\infty, +\infty) \) is ( ).
===Choices
-2
-3.5
-4
1
4
-4.5
-5
-4.25
-1
-3 | -4 | general_qa | 141 |
The following is a multiple choice question (with answers).
===Question
What is the correct statement regarding the proximal mesiodistal relationship?
===Choices
The mesiobuccal cusp of the maxillary first molar is placed at the central buccal groove of the mandibular first molar.
The lingual cusp of the maxillary fir... | The mesiobuccal cusp of the maxillary first molar is positioned at the distal buccal groove of the mandibular first molar. | general_qa | 315 |
The following is a multiple choice question (with answers).
===Question
Let $X$ be the space
$$
\{( x, y, 0 ) \mid x^{2}+y^{2}=1 \} \cup\{( x, 0, z ) \mid x^{2}+z^{2}=1 \}.
$$
Find the fundamental group $\pi_{1} ( \mathbb{R}^{3} \setminus X )$ .
===Choices
$$
\mathrm{r a n k} \ 2, \ \mathrm{i. e.,} \ \mathbb{Z} * \mat... | $$
\mathrm{r a n k} \ 3, \ \mathrm{i. e.,} \ \mathbb{Z} * \mathbb{Z} * \mathbb{Z}
$$ | general_qa | 504 |
The following is a multiple choice question (with answers).
===Question
The sound intensity level of plane sound waves in the air is 70 dB. Find the sound energy density and effective sound pressure; the sound pressure level of plane sound waves in water is 70 dB (reference value $1 \ \mu\mathrm{bar}$). Find its sound ... | $\stackrel{.} {E}_{a}=2.9 \times10^{-8} \mathrm{~ J / m^3, 0.64 ~ Pa} ; 4.6 \times10^{-4} \mathrm{~ J / m^3, 310 ~ Pa}$ | general_qa | 772 |
The following is a multiple choice question (with answers).
===Question
In a narrow, semi-enclosed bay where standing waves are formed by tidal currents, where is the tidal current the strongest?
===Choices
Tidal node/mean sea level
Coastal banks/near surface
Harbor entrance/shallow water areas
Coastal inlet/shallow r... | Tidal node/mean sea level | general_qa | 121 |
The following is a multiple choice question (with answers).
===Question
When the coastline intersects with the geological structure line and the coastline twists and turns, what is it called?
===Choices
Convergent coast
Riatic coast
Jagged coast
Tectonic coastline
Divergent coast
Curvilinear coast
Fractured coastline
... | Irregular coastline | general_qa | 83 |
The following is a multiple choice question (with answers).
===Question
Which of the following descriptions about transverse framing system is incorrect?
===Choices
Less cargo hold volume loss
Commonly used in coastal medium and small ships
Easy to construct
Relatively lighter ship weight | Relatively lighter ship weight | general_qa | 55 |
The following is a multiple choice question (with answers).
===Question
The current types of secondary education schools in Russia mainly include (), science schools, and liberal arts schools.
===Choices
specialized schools
international schools
technical schools
general education schools
vocational schools
community ... | specialized schools | general_qa | 76 |
The following is a multiple choice question (with answers).
===Question
In which year was the Transitional Justice Promotion Commission dissolved?
===Choices
2022
2029
2025
2021
2023
2027
2028
2020
2024
2026 | 2022 | general_qa | 77 |
The following is a multiple choice question (with answers).
===Question
The normal boiling point of benzene is $80 \mathrm{C}$, $\Delta^{\mathrm{g}} H_{\mathrm{m}}^{\ominus} \approx 30 \mathrm{kJ} \cdot \mathrm{mol}^{-1}$. What is the approximate percentage change in vapor pressure estimated for every 1°C change in tem... | 3% | general_qa | 129 |
The following is a multiple choice question (with answers).
===Question
What is the error in the Decryption pseudo code for RC5
$$\mathrm{for~i}=1 \mathrm{to~r~do} \\
\mathrm{RDi-1=((RDi-S[2xi+1]>>>LDi)\oplus LDi)} \\
\mathrm{LDi-1=((LDi-S[2xi]>>>RDi-1)\oplus RDi-1);} \\
\mathrm{B=RD0+S[1];} \\
A=\mathrm{LD0-S[0];}$$
... | $\mathrm{B=RD0+S[1];}$ | general_qa | 323 |
The following is a multiple choice question (with answers).
===Question
A system of particles consists of a particle located at point $(a, -a, a)$ with a mass of $4m$, a particle located at point $(-a, a, a)$ with a mass of $3m$, and a particle located at point $(a, a, a)$ with a mass of $2m$. What is the moment of ine... | $$
2 3 m a^{2}
$$ | general_qa | 222 |
The following is a multiple choice question (with answers).
===Question
One end of a glass capillary tube with a radius $r=0.05$ $cm$ is immersed into water to a depth of $h = 2cm$. What pressure is required to blow an air bubble out of the lower end of the tube:
$T=7\times { 10 }^{ -2 }N/m$ and $\rho ={ 10 }^{ 3 }$ kg... | 480 N/ ${ m }^{ 2 }$ | general_qa | 250 |
The following is a multiple choice question (with answers).
===Question
The three indicators of vehicle load utilization index include (), (), ().
===Choices
Freight load efficiency rate; Freightweight usage ratio; Actual load value
Performance rate of payload; Payload utilization percentage; True load value
Cargo cap... | Utilization rate of dead load; Deadweight utilization rate; Actual load rate | general_qa | 177 |
The following is a multiple choice question (with answers).
===Question
There is a water-cooled condenser with a condensing load of 120,000 kcal/hour, and the cooling water is 250 liters/min. Let the heat transfer coefficient is K = 800 kcal/m ²· hour ·°C, when the cooling water inlet temperature is $t_{w1}$= 23°C, in ... | $41.2 m^2$ | general_qa | 202 |
The following is a multiple choice question (with answers).
===Question
Who was the photographer for the cover of the March 29/April 5, 2021, issue of Time?
===Choices
Wynne Neillyy
Wynne Neilly
Wynne Neillie
Wynne Neill
Wynne Neely
Wynne Nealie
Wynne Nealy
Wynne Neilyy
Wynne Neilliey
Wynne Neily | Wynne Neilly | general_qa | 110 |
The following is a multiple choice question (with answers).
===Question
An aqueous solution containing a non-volatile solute $\mathbf{B}$ begins to crystallize ice at 270.15K under a pressure of 101325Pa. Given the cryoscopic constant of water $K_{1} \!=\! 1.86 \mathrm{~K} \! \cdot\! \mathrm{kg} \! \cdot\! \mathrm{mol}... | 373.99K | general_qa | 238 |
The following is a multiple choice question (with answers).
===Question
The reading of the mercury barometer inside the submarine is $h_{1}$ = 800 mm, the reading of the U-tube mercury manometer is $h_{2}$ = 500 mm, the reading of the mercury barometer at sea level is 760 mm, and the density of seawater is 1025 $kg/{m}... | 13.8m | general_qa | 175 |
The following is a multiple choice question (with answers).
===Question
Based on the $N$ point discrete samples of the Fourier transform of the following discrete-time signal, determine each corresponding discrete-time domain signal is ().
$X(k) = \cos\left(\frac{\pi k}{N}\right) + j\sin\left(\frac{2\pi k}{N}\right),\q... | $$
x(n)= \frac{-(-1 )^{n}} {2 \pi\Big( n^{2}-\frac{1} {4} \Big)}+\frac{1} {2} \delta( n+1 )-\frac{1} {2} \delta( n-1 )
$$ | general_qa | 787 |
The following is a multiple choice question (with answers).
===Question
Who was the Guangdong native hired as the chief engineer, one of the construction supervisors of the Sacred Heart Cathedral?
===Choices
Cai Xiao
Cai Xue
Cai Xuea
Cai Xuei
Cai Xueo
Cai Xia
Cai Xian | Cai Xiao | general_qa | 75 |
The following is a multiple choice question (with answers).
===Question
Combustion reactions are relatively easy to carry out and study, and their data can be combined to give enthalpies of other types of reaction. As an illustration, calculate the standard enthalpy of hydrogenation of cyclohexene to cyclohexane given ... | $$
-121km \ mol
$$ | general_qa | 242 |
The following is a multiple choice question (with answers).
===Question
Starting from which decade of the 20th century did Western developed countries successively begin administrative reforms, and then many developing countries also carried out varying degrees of administrative reforms due to adopting marketization?
... | 70 | general_qa | 86 |
The following is a multiple choice question (with answers).
===Question
Traveller&;s diarrhoea is caused by
===Choices
E. coli O157
Giardiasis
Campylobacter jejuni
E. coli O157:H7
E. coli O104:H7
E. coli O104:H4
Shigella
E. Coli
E. histolytica
Vibrio cholerae | E. Coli | general_qa | 101 |
The following is a multiple choice question (with answers).
===Question
Based on the analysis of the relationship between mine infrastructure investment and production scale, the investment coefficient related to mine production scale is \(59.5 \, \text{CNY}\) per unit, and the investment parameter related to productio... | 1907.45, 2369.25 | general_qa | 344 |
The following is a multiple choice question (with answers).
===Question
Fertilizers for turfgrass are usually applied with a ratio of nitrogen, phosphorus, and potassium fertilizers of ___.
===Choices
10:6:8
10:12:8
6:8:10
12:10:6
8:10:6
6:10:8
12:8:10
8:6:10
10:8:6
6:8:12 | 10:8:6 | general_qa | 114 |
The following is a multiple choice question (with answers).
===Question
In which vertebrates did the neocortex first appear?
===Choices
Amphioxus
Primates
Birds
Reptiles
Fish
Insects
Amphibians
Marsupials
Cartilaginous fish
Mammals | Reptiles | general_qa | 68 |
The following is a multiple choice question (with answers).
===Question
Among the following formats, which ones are unconditionally stable?
===Choices
Exponential Format, Power Format, Inverse Format
Mixed Format, Rational Format, Logarithmic Format, First-order Upwind Format
Mixed Format, Quadratic Format, Logarithmi... | Mixed Format, Exponential Format, Power Format, Second-order Upwind Format | general_qa | 168 |
The following is a multiple choice question (with answers).
===Question
Figure shows an end view of two long, parallel wires perpendicular to the xy plane, each carrying a current $I$, but in opposite directions. At what value of $x$, the magnitude of $ ec { B } $ is maximum?
===Choices
$$x=0$$
$$x=a$$
$$x = 3a$$
$$x=... | $$x=0$$ | general_qa | 139 |
The following is a multiple choice question (with answers).
===Question
Congress enacts a $100 tax on the sale of any handgun to a private individual not for use in law enforcement or military duties. Will this new handgun tax survive a constitutional challenge?
===Choices
Yes, if the dominant intent of Congress was t... | Yes, if the dominant intent of Congress was that the tax would produce revenue. | general_qa | 198 |
The following is a multiple choice question (with answers).
===Question
Find zeros of $f(x) = \sqrt[3]{2 \cdot x - 3} + \sqrt[3]{3 \cdot x + 2} - 3$
===Choices
1.25
2
1.65
1.5
1.8
1.9
1.75
1.6
1
1.7 | 2 | general_qa | 94 |
The following is a multiple choice question (with answers).
===Question
Average annual weight gain from age 2 to pre-puberty ___.
===Choices
6 kg
3 kg
5 kg
4 kg
8 kg
1 kg
10 kg
7 kg
2 kg
9 kg | 2 kg | general_qa | 62 |
The following is a multiple choice question (with answers).
===Question
The characteristic impedance of a uniform, lossless transmission line is $Z_{0} = 100 \Omega$. The first voltage wave node measured along the transmission line, moving away from the terminal towards the power source, is at $z_{\operatorname*{minl}}... | $$
8 0-\mathrm{j} 6 0 ( \Omega)
$$ | general_qa | 356 |
The following is a multiple choice question (with answers).
===Question
Let $A =diag(1, -2, 1)$ and the matrix $B$ satisfies $A^* B A = 2 B A - 8 E$. Therefore, what is the value of matrix $B$?
===Choices
$$B=A +E
$$
$$B=2 E
$$
$$B=2 A ^2-E
$$
$$B=E
$$
$$B=2 A +E
$$
$$B=2 A
$$
$$B= A ^2-E
$$
$$B=A
$$
$$B=2 A ^2
$$
$$B... | $$B=2 A
$$ | general_qa | 152 |
The following is a multiple choice question (with answers).
===Question
Which of the following exhaust methods cannot be used alone?
===Choices
Steam jet exhaust
Natural air tank exhaust
Oil heated exhaust
Hot can sealing
Heat pump exhaust
Water jet exhaust
Cold can sealing
Vacuum sealed tank exhaust
Gas flame exhaust... | Steam jet exhaust | general_qa | 70 |
The following is a multiple choice question (with answers).
===Question
The experiment determined that, under constant pressure, the rate constant for the gas-phase bimolecular isomerization reaction of cis-ethylene-$d_2$ catalyzed by NO follows the relationship:
$k =2.28 \times 10^{8} exp (-116.65 \times 10^{3} J \cdo... | $-83. 1$ $J\cdot K^{- 1}\cdot \mathrm{mol}^{-1}$ | general_qa | 440 |
The following is a multiple choice question (with answers).
===Question
A popular singer expressed interest in performing in a theater producer's musical production. The producer and the singer agreed that there would be no enforceable contractual obligations between them until they had entered into a final, signed con... | Nothing, because it was not reasonable for the producer to expect to be reimbursed for expenses incurred when he knew that the singer was not obligated until there was a final, signed agreement. | general_qa | 330 |
The following is a multiple choice question (with answers).
===Question
Which of the following statements about the purpose of radiation protection is incorrect?
===Choices
Protecting Humanity
Restrict all practices related to radiation exposure.
Avoid the occurrence of deterministic effects and reduce the probability... | Restrict all practices related to radiation exposure. | general_qa | 68 |
The following is a multiple choice question (with answers).
===Question
14 Her is a KOV star located 18.1 pc from Earth. The extrasolar planet orbiting the star has an orbital period of 1796.4 d with an orbital eccentricity of 0.338. Consulting Appendix $\mathrm{G},$ determine
the semimajor axis of the planet's orbit:
... | $$
3. 1 \mathrm{A U}.
$$ | general_qa | 229 |
The following is a multiple choice question (with answers).
===Question
How many entries are listed in Yevgeny Kychanov's catalog of Buddhist texts from the city of Khar Khoto in the Western Xia literature?
===Choices
764
767
770
768
765
771
766
769
763
772 | 768 | general_qa | 89 |
The following is a multiple choice question (with answers).
===Question
Which of the following grades is the gray cast iron with F+P matrix?
===Choices
HT300
HT450
HT550
HT200
HT350
HT100
HT150
HT500
HT400
HT250 | HT150 | general_qa | 82 |
The following is a multiple choice question (with answers).
===Question
Calculate the following integral:
$$
\int_{0}^{+\infty} {\frac{\operatorname{s i n} x} {x ( x^{2}+1 )^{2}}} \mathrm{d} x
$$
===Choices
$$
{\frac{\pi} {2}} \left( 1-{\frac{3} {2 \mathrm{e}}} \right)
$$
$$
{\frac{\pi} {2}} \left( 1-{\frac{3} {\mathr... | $$
{\frac{\pi} {2}} \left( 1-{\frac{3} {2 \mathrm{e}}} \right)
$$ | general_qa | 396 |
The following is a multiple choice question (with answers).
===Question
In the paper "On the Electrodynamics of Moving Bodies," where Einstein established the theory of special relativity, he stated that clocks at the Earth's equator run slower than those at the Earth's poles. Assuming the Earth is 5 billion years old ... | 2.2days | general_qa | 155 |
The following is a multiple choice question (with answers).
===Question
After World War II, the new changes in capitalism are objective facts. Correctly recognizing the essence of the new changes in capitalism is of great significance for deeply grasping the essence and laws of capitalism and firmly upholding the 'Four... | Fundamentally, the new changes in contemporary capitalism are the result of the general laws of human social development and the laws of capitalist economic development. | general_qa | 322 |
The following is a multiple choice question (with answers).
===Question
Which of the following traumas can be completely repaired?
===Choices
Impacted fracture
Closed fracture
Compound fracture
Surgical incision for primary healing
Open fracture
Displaced fracture
Wound of third degree burn
Multiple fractures
Surgical... | Closed fracture | general_qa | 75 |
The following is a multiple choice question (with answers).
===Question
The distribution between party identity variables and race variables in the 2004 United States General Social Survey is as follows: 250, 106 and 17 support Democrats, independents and Republicans among blacks and 640, 783 and 775 among whites. What... | 129.1 | general_qa | 159 |
The following is a multiple choice question (with answers).
===Question
What day, month, and year was James Young (Missouri politician) born?
===Choices
11 May, 1801
11 May, 1806
11 May, 1802
11 May, 1804
11 May, 1803
11 May, 1809
11 May, 1808
11 May, 1805
11 May, 1807
11 May, 1800 | 11 May, 1800 | general_qa | 133 |
The following is a multiple choice question (with answers).
===Question
The influencing factors of people's desire for work are () and ().
===Choices
Cultural influences on work; Specific skill development
Educational background relevance; Familial pressure to succeed
Labor conditions in a broad sense; The level of pa... | Labor conditions in a broad sense; The level of pay for labor | general_qa | 125 |
The following is a multiple choice question (with answers).
===Question
We now define an algorithm: The definition of a(n) is the number of internal nodes in a rooted tree whose Matula-Goebel number is n. The Matula-Goebel number of a rooted tree is defined as follows: (1) The one-vertex tree is assigned the number 1; ... | [4, 4, 6, 5, 4, 2, 6, 3, 6, 5] | general_qa | 511 |
The following is a multiple choice question (with answers).
===Question
Let $a, b, c$ be positive reals such that $abc + a + b = c$ and
$$ \frac{19}{\sqrt{a^2 + 1}} + \frac{20}{\sqrt{b^2 + 1}} = 31.$$
The maximum possible value of $c^2$ can be written in the form $\frac{m}{n}$ where $m$ and $n$ are relatively prime pos... | 361 | general_qa | 167 |
The following is a multiple choice question (with answers).
===Question
What are the effects of Houttuynia cordata?
===Choices
Increased appetite and sleepiness
Nasal congestion and dry skin
Blood circulation and energy boost
Skin rashes and weight gain
Reduced inflammation and oxidation
Diarrhea and urinary retention... | Purulent discharge and diuresis | general_qa | 97 |
The following is a multiple choice question (with answers).
===Question
Under different political and economic systems, the school system has common characteristics in many aspects, such as the age of entry, and the division of the stages of senior, middle and primary school, which are consistent in many countries. Wha... | Influence of the Laws of Physical and Mental Development on Adolescents | general_qa | 177 |
The following is a multiple choice question (with answers).
===Question
A system consists of $N$ nearly independent particles each with mass $m$, reaching thermal equilibrium at high temperatures ( obtained using classical statistics ). The particles vibrate one-dimensionally around their equilibrium positions. Determi... | $$
N k
$$
$$
\frac{3} {4} N k.
$$ | general_qa | 338 |
The following is a multiple choice question (with answers).
===Question
According to the UCP 600 rules, when the seller ships goods under the following conditions: a total quantity of 10,000 metric tons of bulk goods, with a total amount of $900,000, without specifying whether short or overloading is allowed, and no pa... | The quantity can vary by 5%, but the amount cannot exceed $900,000. | general_qa | 268 |
The following is a multiple choice question (with answers).
===Question
A sequence of equal-amplitude DC pulses has a pulse duration of 5μs and a repetition frequency of 20kHz. What is the bandwidth required for the transmission of the signal?
===Choices
190kHz
180kHz
240kHz
200kHz
220kHz
170kHz
230kHz
150kHz
260kHz
2... | 200kHz | general_qa | 105 |
The following is a multiple choice question (with answers).
===Question
How many female renouncers were under the tutelage of Chandanbala?
===Choices
12,000
30,000
36,000
42,000
7,000
24,000
50,000
15,000
18,000
28,000 | 36,000 | general_qa | 102 |
The following is a multiple choice question (with answers).
===Question
There are two different colored solutions that both comply with Lambert-Beer's Law. Assuming the thickness of the colorimetric cell, the intensity of the incident light, and the concentration of the solutions are all equal, which of the following s... | All the statements are incorrect. | general_qa | 101 |
The following is a multiple choice question (with answers).
===Question
Which photograph by Nilüfer Demir was selected by Time Magazine as one of the '100 Photos of 2015'?
===Choices
The photograph of Aylan Kurdi in a boat
The photograph of Aylan Kurdi on a beach, taken from a different angle, showing a different pers... | The photograph of Alan Kurdi | general_qa | 209 |
The following is a multiple choice question (with answers).
===Question
Select the right expression for determining packing fraction (P.F) of NaCl unit cell (assume ideal), if the ions along an edge diagonal are absent.
===Choices
\(\displaystyle P.F = \frac{\frac{4}{3} \pi\left(\frac{5}{2}r_+^3 + 3r_-^3\right)}{16 \s... | $$\displaystyle P.F = \frac{\frac{4}{3} \pi(\frac{5}{2}r_+^3 + 4r_-^3)}{16 \sqrt{2} r_-^3}$$ | general_qa | 589 |
The following is a multiple choice question (with answers).
===Question
A 70 year old hypeensive male presents complaining of a brief episode of slurred speech and left sided weakness previous evening. He gives a history of two transient episodes of sudden loss of vision in his right eye last month. His Neurological ex... | Carotid Doppler | general_qa | 152 |
The following is a multiple choice question (with answers).
===Question
Residual parent material refers to the___ that remain in place for a long time after the weathering of rocks.
===Choices
heavy matter
rough particles
strong contents
sticky residues
firm features
solid aggregates
dense components
compact elements
... | loose substances | general_qa | 70 |
The following is a multiple choice question (with answers).
===Question
On which day, month, and year did the Ministry of Road Transport and Highways (MoRTH), Government of India, promulgate the Green Highways (Plantations, Transplantations, Beautification and Maintenance) Policy - 2015?
===Choices
October 28 2015
Sep... | September 29 2015 | general_qa | 170 |
The following is a multiple choice question (with answers).
===Question
Factor completely, or state that the polynomial is prime.
$$x^{3}+3 x^{2}-25 x-75$$
===Choices
(x-5)(x+5)(x+2)
(x+5)(x-5)(x-5)
(x+5)(x+5)(x+3)
(x-5)(x+5)(x+3)
(x+5)(x-5)(x-3)
(x-5)(x+5)(x-3)
(x+5)(x+5)(x-5)
(x+5)(x-5)(x-2)
(x+5)(x-5)(x+3)
(x+5)(x+... | (x+5)(x-5)(x+3) | general_qa | 167 |
The following is a multiple choice question (with answers).
===Question
In Bhutan, what are the reasons why the local government is able to carry out land preparation in the process of urban development?
===Choices
The local government negotiated repeatedly with agricultural committees to secure their support for urba... | The local government insisted on negotiating with the landowners to persuade them to participate in land preparation. | general_qa | 189 |
The following is a multiple choice question (with answers).
===Question
A train is moving towards a platform with the speed of 54 km/h and the wind is blowing in the direction of train's motion, what is observed frequency of the horn of train by the passenger who is standing on the platform? Original frequency of horn ... | 344 Hz | general_qa | 159 |
The following is a multiple choice question (with answers).
===Question
The primary purpose of mapping is to provide ( ).
===Choices
Photo control points
Attributes of ground features
Diagrams of vegetation zones
Visual representations of water
Models of terrain heights
Positions of ground features
Coordinates of road... | Attributes of ground features | general_qa | 76 |
The following is a multiple choice question (with answers).
===Question
A gamer agreed to purchase a friend's used smart TV for $100. When negotiating the sale, the gamer had asked the friend if the Internet function on the TV worked. The friend said, "The last time I checked, the Internet worked." The gamer never insp... | No, because the friend's statement likely did not create a warranty as to the Internet function, and if it did, evidence of the statement would be excluded by the parol evidence rule. | general_qa | 429 |
The following is a multiple choice question (with answers).
===Question
Convert the atom percent composition in Problem 4. 18 to weight percent.id().
===Choices
$$
4. 0 \mathrm{~ w t}^{0} /_{0}
$$
$$
8. 5 \mathrm{~ w t}^{0} /_{0}
$$
$$
7. 4 \mathrm{~ w t}^{0} /_{0}
$$
$$
3. 8 \mathrm{~ w t}^{0} /_{0}
$$
$$
6. 1 \mathr... | $$
4. 0 \mathrm{~ w t}^{0} /_{0}
$$ | general_qa | 255 |
The following is a multiple choice question (with answers).
===Question
Which of the following reflects the 'revolutionary' aspect of Kant's 'Copernican Revolution'?
===Choices
Conforming the object to thought while maintaining universal necessity
Conforming the object to thought
Conforming thought to the universal ne... | Conforming the object to thought | general_qa | 135 |
The following is a multiple choice question (with answers).
===Question
Conductance of one molar $HA$ aq solution is $20\ \Omega^{-1}\ cm^{2} mol^{-1}$ then $K_a$ will be (if $\wedge^ {\infty}_m = 400\ \Omega^{-1} cm^{2}\ mol^{-1}$ neglect conductance of water)
===Choices
$$3 \times 10^{-3}$$
$$2.5\times 10^{-3}$$
$$ ... | $$4\times 10^{-2}$$ | general_qa | 205 |
The following is a multiple choice question (with answers).
===Question
Let $k$ be the value of
$$$\lfloor log_2 1 \rfloor + \lfloor log_2 2 \rfloor + \lfloor log_2 3 \rfloor + \dots + \lfloor log_2 2017 \rfloor+ \lfloor log_2 2018 \rfloor$$$
where $\lfloor m \rfloor$ denotes the integer part of $m$ (the biggest intege... | 144 | general_qa | 184 |
The following is a multiple choice question (with answers).
===Question
In maize, the allele *b* causes the endosperm color of the kernel to be white, while *b+* represents the wild-type purple. Another gene, *w* (*waxy*), results in waxy endosperm, whereas *wx+* is the wild-type starchy endosperm. A third gene, *cn*, ... | 10.3 | general_qa | 318 |
The following is a multiple choice question (with answers).
===Question
Given the magnetic induction intensity of the external magnetic field $B = 1.5 \mathrm{T}$, what is the additional potential energy of the $^{6}\mathrm{Li}$ nucleus in this magnetic field?
===Choices
$$
\pm8. 4 1 \times1 0^{-2 6} \mathrm{J}
$$
$$
... | $$
\pm6. 2 3 \times1 0^{-2 7} \mathrm{J}
$$ | general_qa | 330 |
The following is a multiple choice question (with answers).
===Question
According to the Chinese Pharmacopoeia, the disintegration time limit for ordinary tablets is ( ).
===Choices
90 minutes
75 minutes
45 minutes
15 minutes
135 minutes
10 minutes
60 minutes
30 minutes
120 minutes
105 minutes | 15 minutes | general_qa | 79 |
The following is a multiple choice question (with answers).
===Question
The composition of a slag from a lead blast furnace smelting is ($w_B/\%$): $SiO_2$ 36, CaO 10, FeO 40, ZnO 8. Calculate the acidity $r$ of the slag.
===Choices
$r=1.44$
$r=0.28$
$r=1.39$
$r=1.04$
$r=1.21$
$r=1.89$
$r=0.719$
$r=0.42$
$r=0.89$
$r=0... | $r=1.44$ | general_qa | 147 |
The following is a multiple choice question (with answers).
===Question
In which country did the 2012 Lamu violence occur?
===Choices
Bangladesh
India
Indonesia
Somalia
Myanmar
Nepal
Maldives
Sri Lanka
Pakistan
Kenya | Bangladesh | general_qa | 61 |
The following is a multiple choice question (with answers).
===Question
The main cause of 'Bo Jue' discussed in the 'Plain Questions: Discussion on the Connection between Vitality and Heaven' is:
===Choices
Yang Qi, when reversed, causes the blood and Qi to become disordered
Yang Qi, when weak, causes Yin Qi to rise
Y... | Yang Qi, when greatly angered, causes the form and Qi to be cut off | general_qa | 192 |
The following is a multiple choice question (with answers).
===Question
Who served as the President of the interim government of Iraq in 2004?
===Choices
Ayad Allawi
Nouri al-Maliki
Ghazi al-Yawer
Jalal Talabani | Ghazi al-Yawer | general_qa | 60 |
The following is a multiple choice question (with answers).
===Question
Plants living in damp environments usually lack which of the following morphological structural features?
===Choices
Epidermis contains abundant stomata.
Fence structures are underdeveloped.
Epidermal cells contain chloroplasts
The air chambers an... | Epidermal cells contain chloroplasts | general_qa | 125 |
The following is a multiple choice question (with answers).
===Question
In preschool education institutions, the education of children with language disorders should not be ().
===Choices
language enhancement should be pervasive in many teaching areas
mixed with regular preschool educational activities
separated from ... | separated from ordinary preschool education activities | general_qa | 121 |
The following is a multiple choice question (with answers).
===Question
What is Anton Chekhov's drama style known for?
===Choices
Tragedy
Melodrama
Symbolism
Comedy
Realism | Comedy | general_qa | 45 |
The following is a multiple choice question (with answers).
===Question
A nonrelativistic particle with a charge twice that of an electron moves through a uniform magnetic field. The field has a strength of π/4 tesla and is perpendicular to the velocity of the particle. What is the particle's mass if it has a cyclotron... | 2.5 * 10^-23 kg | general_qa | 201 |
The following is a multiple choice question (with answers).
===Question
A company has 8 employees, including 3 managers and 5 engineers. How many different ways are there to form a team of 4 employees that includes at least 1 manager and at least 2 engineers?
===Choices
90
40
55
60
65
50
70
100
80
75 | 60 | general_qa | 91 |
The following is a multiple choice question (with answers).
===Question
What were the day, month, and year when Google released a version of Chrome on Windows that added hardware-accelerated H.264 video decoding?
===Choices
6 November 2012
6 November 2013
6 November 2017
6 November 2018
6 November 2011
6 November 2010... | 6 November 2012 | general_qa | 129 |
The following is a multiple choice question (with answers).
===Question
James took a loan of $240 for 30 days at 6% interest. How much interest did he have to pay?
===Choices
$1.80
$0.36
$3.60
$0.60
$1.20
$14.40
$7.20
$12.00
$4.80
$2.40 | $1.20 | general_qa | 107 |
The following is a multiple choice question (with answers).
===Question
The total weight of the oil barrel is 300 kg, with a barrel diameter of 0.6 m and a height of 1.2 m. What is the density of the machine oil ?
===Choices
$$
\rho=8 4 4 \mathrm{k g} / \mathrm{m}^{3}
$$
$$
\rho=8 5 0 \mathrm{k g} / \mathrm{m}^{3}
$$
... | $$
\rho=8 4 4 \mathrm{k g} / \mathrm{m}^{3}
$$ | general_qa | 319 |
The following is a multiple choice question (with answers).
===Question
Let \( n \) be any positive integer, and alpha be a real number, then
$$
[ \alpha]+\left[ \alpha+\frac{1} {n} \right]+\cdots+\left[ \alpha+\frac{n-1} {n} \right]=?
$$
===Choices
$$
\left[ n + \alpha \right]
$$
$$
( \alpha n )
$$
$$
[ n \alpha]
$$
... | $$
[ n \alpha]
$$ | general_qa | 176 |
The following is a multiple choice question (with answers).
===Question
Two blocks of masses 3kg and 2kg are placed beside each other in contact with each other on a rough horizontal surface. A horizontal force of 20 N is applied on 3 kg the coefficient of friction between blocks and the surface is 0.1 and $g = 10ms^{2... | $$6N$$ | general_qa | 146 |
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