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
Pressure equal to 0.101 MPa and temperature equal to ____°C are the standard conditions for natural gas.
===Choices
15
30
40
25
10
5
0
35
-10
20 | 20 | general_qa | 71 |
The following is a multiple choice question (with answers).
===Question
The crystal structure of Nb is body-centered cubic (bcc), with a lattice constant of $0.3294 \, \text{nm}$ and a density of $8.57 \, \text{g/cm}^3$. What is the number of vacancies in every $10^6$ Nb?
===Choices
6895.2
7779.1
8032.5
7634.7
7176.6
... | 7176.6 | general_qa | 153 |
The following is a multiple choice question (with answers).
===Question
A 26-year-old medical student comes to the physician for a chest x-ray to rule out active pulmonary tuberculosis. He needs a medical and radiological report before starting a medical internship in South Africa. He has no history of serious illness ... | Observation and follow-up x-ray | general_qa | 332 |
The following is a multiple choice question (with answers).
===Question
An electron is positioned at rest 1 meter from a positively charged Van de Graaff generator. If the electron somehow moves to a separation of 2 meters from the Van de Graaff (and left at rest), how does the electron's potential energy change?
===C... | it increases | general_qa | 101 |
The following is a multiple choice question (with answers).
===Question
The recovery rate refers to the ratio of ( ) to ( ).
===Choices
Extracted resources, available deposits
Annual earnings, quarterly losses
Total investments, market returns
Monthly expenses, yearly budgets
Production costs, sales revenue
Liquid ass... | Proved reserves, geological reserves | general_qa | 91 |
The following is a multiple choice question (with answers).
===Question
Which of the following statements are true concerning a comparison between ARCH(q) and GARCH(1,1) models?
i) The ARCH(q) model is likely to be the more parsimonious
ii) The ARCH(q) model is the more likely to violate non-negativity constraints
iii)... | (ii) and (iv) only | general_qa | 225 |
The following is a multiple choice question (with answers).
===Question
What did Pushkin call the female protagonist of 'Eugene Onegin'?
===Choices
My dear ideal
Russian female archetype
Beautiful Liza
Noble Daryana
Fearless Tatiana | My dear ideal | general_qa | 55 |
The following is a multiple choice question (with answers).
===Question
For each positive integer $n$, let $k(n)$ be the number of ones in the binary representation of $2023 \cdot n$. What is the minimum value of $k(n)$?
===Choices
5
3
10
6
9
2
4
1
8
7 | 3 | general_qa | 79 |
The following is a multiple choice question (with answers).
===Question
The ___refers to the layer between the surface of the earth and the first discontinuity.
===Choices
biosphere
crust
lithosphere
sediment
mesosphere
ozone
mantle
stratosphere
hydrosphere
core | crust | general_qa | 68 |
The following is a multiple choice question (with answers).
===Question
Which of the following changes may suggest heart failure?
===Choices
Short and thin pulse
Steady and strong pulse
Alternating pulse
Fine, rapid, and weak pulse
Gradual and heavy pulse
Water-hammer pulse
Continuous and full pulse
Unchanging and fir... | Alternating pulse | general_qa | 83 |
The following is a multiple choice question (with answers).
===Question
For a certain product, let $u_{1}$ represent durability, $u_{2}$ represent color and style, $u_{3}$ represent price, and $u_{4}$ represent the impression of the product. The satisfaction level of the evaluator for the product is expressed as:
$$
h ... | 0.6 | general_qa | 248 |
The following is a multiple choice question (with answers).
===Question
An event that may or may not occur is called what?
===Choices
Uncertain event
Definite event
Random event
Impossible events
Probable event
Certain event
Variable event
Necessary events
Chance events
Inevitable event | Random event | general_qa | 64 |
The following is a multiple choice question (with answers).
===Question
Which work of Cao Yu uses ancient metaphors to reveal the theme of 'striving for self-improvement'?
===Choices
Cai Wenji
Wang Zhaojun
Mayor Chen Yi
Guan Hanqing
The Sword and the Saber | The Sword and the Saber | general_qa | 67 |
The following is a multiple choice question (with answers).
===Question
$\mathsf{A}$ sample of water vapour at 2000C is compressed isothermally from 350 cm to 120 cm3. What is the change in its molar Gibbs energy?
===Choices
$$
- 2. 6 ~ \mathrm{k J ~ m o l}^{-1}
$$
$$
+ 5. 3 ~ \mathrm{k J ~ m o l}^{-1}
$$
$$
+ 6. 4 ~ ... | $$
+ 4. 2 ~ \mathrm{k J ~ m o l}^{-1}
$$ | general_qa | 295 |
The following is a multiple choice question (with answers).
===Question
A particle which can move along x-axis is released from rest at the position $x = x_0.$ The potential energy (U) of the block is described below :
$$U=\begin{Bmatrix} -ax &;x<0 \ bx^2 &;x\geq0 \end{Bmatrix}$$
Which of the following statements i... | The speed is a continuous function of time | general_qa | 178 |
The following is a multiple choice question (with answers).
===Question
In which year was the National Cultural Heritage Administration renamed to its current name?
===Choices
1983
1978
1987
1984
1988
1989
1982
1998
1986
1985 | 1988 | general_qa | 81 |
The following is a multiple choice question (with answers).
===Question
At 1873K, the mass fraction of oxygen in molten iron in equilibrium with pure iron oxide slag is 0.211%. The mass fraction of oxygen in molten iron in equilibrium with slag having a composition of $w(\text{CaO}) = 39.18\%$, $w(\text{MgO}) = 2.56\%$... | $1.48$ | general_qa | 223 |
The following is a multiple choice question (with answers).
===Question
How old was Hetty King when she first appeared on the stage of the Shoreditch Theatre?
===Choices
5.25 years old
5.75 years old
5 years old
4 years old
5.5 years old
9 years old
7 years old
6 years old
10 years old
8 years old | 6 years old | general_qa | 85 |
The following is a multiple choice question (with answers).
===Question
\( \int \sec^3 x \, dx \) = ( )
===Choices
\\( \\frac{1}{2} \\sec x \\tan x - \\frac{1}{2} \\ln \\left| \\sec x - \\cot x \\right| + C \\)
\\( \\frac{1}{2} \\sec x \\tan x + \\frac{1}{2} \\ln \\left| \\sec x - \\tan x \\right| + C \\)
\\( \\frac{1... | \\( \\frac{1}{2} \\sec x \\tan x + \\frac{1}{2} \\ln \\left| \\sec x + \\tan x \\right| + C \\) | general_qa | 453 |
The following is a multiple choice question (with answers).
===Question
Which of the physical aspects of brass performance directly affects changes in dynamics?
===Choices
Embouchure
Velocity of air
Posture
Volume of air | Velocity of air | general_qa | 45 |
The following is a multiple choice question (with answers).
===Question
In maize, chromosome 1 contains a pair of genes that determine the color of the pasty layer, $\mathbf{C}$ is colored, c is colorless, and $\mathbf{C}$ is completely dominant to c. The gene is a chromosomal pair that determines the color of the past... | Homologous Chromosome Exchange | general_qa | 249 |
The following is a multiple choice question (with answers).
===Question
Based on whether the axis is fixed, what are the two main types of gear trains?
===Choices
Fixed-axis gear train and planetary gear train
Fixed-axis gear train and epicyclic gear train with a fixed sun gear
Fixed-axis gear train and sun gear train... | Fixed-axis gear train and planetary gear train | general_qa | 139 |
The following is a multiple choice question (with answers).
===Question
Which blood type may be transfused to an
AB-positive baby who has HDN caused by
anti-D?
===Choices
AB positive, CMV negative, Hgb S positive; irradiated or O positive, CMV negative, Hgb S positive
A positive, CMV negative, Hgb S negative; irradiat... | AB negative, CMV negative, Hgb S negative;
irradiated or O negative, CMV negative,
Hgb S negative | general_qa | 255 |
The following is a multiple choice question (with answers).
===Question
The FoxPro command to activate the popup menu M is ___.
===Choices
START POPUP PANEL M
LAUNCH POPUP PANEL M
DISPLAY POPUP M
ENABLE POPUP MENU M
TRIGGER POPUP M
ACTIVATE MENU POPUP M
INITIALIZE POPUP M
EXECUTE POPUP M
OPEN POPUP M
ACTIVATE POPUP M | ACTIVATE POPUP M | general_qa | 90 |
The following is a multiple choice question (with answers).
===Question
The method is not numerical differentiation ( ).
===Choices
The Discrete Fourier Transform
The Limit Comparison Test
The Euler's Approximation Method
The Law of Cosines Method
The Principle of Superposition
The Method of Indeterminate Coefficients... | The Intermediate Value Theorem | general_qa | 88 |
The following is a multiple choice question (with answers).
===Question
Baylor immunologists, working with the Houston Zoo, need monoclonal antibodies to elephant herpes virus. They mix B cells secreting this antibody with myeloma cells in a medium that encourages cells to fuse. They then culture the individual cell pr... | It survives in HAT medium. | general_qa | 260 |
The following is a multiple choice question (with answers).
===Question
Which diseases primarily cause corneal opacity, seen in keratitis and various eye diseases, in dogs?
===Choices
Canine parvovirus and diabetes mellitus
Rabies virus and adenoviral infection
Rabies virus and thyroid dysfunction
Canine influenza and... | Canine distemper and infectious hepatitis | general_qa | 137 |
The following is a multiple choice question (with answers).
===Question
The probability of landslides is most frequent after rainfall and during the thawing seasons of ice and snow, as groundwater levels are at their ___during these times.
===Choices
stablest
deepest
coolest
darkest
lowest
flattest
strongest
highest
l... | highest | general_qa | 78 |
The following is a multiple choice question (with answers).
===Question
A coil of radius R carries a current I. Another concentric coil of radius r ( r < < R) carries current $\displaystyle \frac{I}{2} $. Initially planes of the two coils are mutually perpendicular and both the coils are free to rotate with M and m res... | $$\displaystyle K_{2}> > K_{1}$$ | general_qa | 305 |
The following is a multiple choice question (with answers).
===Question
What characterizes the biphasic delayed type of multiple organ dysfunction syndrome (MODS)?
===Choices
It is solely linked to genetic predisposition issues.
It rarely involves chronic disease complications.
It primarily results from microbial infe... | It is mostly caused by secondary factors. | general_qa | 120 |
The following is a multiple choice question (with answers).
===Question
What can be defined as culture in a broad sense?
===Choices
The sum of material culture and spiritual culture.
Mental Wealth and Religious Beliefs
Foods, traditions, religions, and technological advances
Food, clothing, shelter, transportation, an... | The sum of material culture and spiritual culture. | general_qa | 121 |
The following is a multiple choice question (with answers).
===Question
Vehicle speed $u=20m/s$, road roughness coefficient $Gq (n0)=2.56 × 10 ^ {-4} m ^ {3}$, reference spatial frequency $n0=0.1m ^ {-1}$, what is the vertical velocity power spectral density of the road surface?
===Choices
0.0004
0.0006
0.0002
0.0008
... | 0.0001 | general_qa | 154 |
The following is a multiple choice question (with answers).
===Question
At 298 K, a $0.5 dm^3$ aqueous solution of $NH_4Cl$ with a concentration of $0.200 mol \cdot dm^{-3}$ is mixed with a $0.5 dm^3$ aqueous solution of NaOH with a concentration of $0.100 mol \cdot dm^{-3}$ (ignoring the slight change in volume, and t... | $$
1. 8 \times1 0^{-5} \mathrm{~ m o l ~} \cdot\mathrm{~ d m}^{-3}
$$ | general_qa | 541 |
The following is a multiple choice question (with answers).
===Question
According to the principle of stationing troops, for an island or reef without troops defending it, the islands or reefs in the same jurisdiction must meet which of the following conditions to ensure that the undefended island or reef is not violat... | There must be two islands in the same jurisdiction each with one troop stationed or one island with two troops stationed. | general_qa | 270 |
The following is a multiple choice question (with answers).
===Question
The growth and development of animals require a certain temperature. Which of the following statements is correct?
===Choices
The developmental rate of animals always accelerates with the increase in environmental temperature.
The starting point o... | When the external temperature falls below a certain threshold, insects cease growth and development. This threshold temperature is referred to as the developmental zero temperature. | general_qa | 246 |
The following is a multiple choice question (with answers).
===Question
The route determination of highways generally consists of three types: paper-based routing, field routing, and _____ routing.
===Choices
aerial survey
environmental assessment
geographic modeling
'answer': C
satellite imaging
digital mapping
seism... | aerial survey | general_qa | 82 |
The following is a multiple choice question (with answers).
===Question
() is to make reasonable arrangements for the configuration and stacking of goods on the means of transport. The result is ().
===Choices
Distribution, organization of logistical operations
Assembly, arrangement of item assembly sequences
Loading,... | Stowage, preparation of planning stowage plan | general_qa | 123 |
The following is a multiple choice question (with answers).
===Question
Regarding external effects, the correct statement is ( ).
===Choices
indirect costs and indirect benefits are not reflected in the project financial statements
indirect costs and indirect benefits are mostly tracked through separate management rep... | indirect costs and indirect benefits are not reflected in the project financial statements | general_qa | 175 |
The following is a multiple choice question (with answers).
===Question
A mass of $5\ kg$ is first weighed on a balance at the top of a tower of $20\ m$ height. The mass is then suspended from a fine wire $20\ m$ long and reweighed. What is the difference in weights? Mass of earth $= 6\times 10^{24} kg$ and $G = 6.67\t... | $$0.003\ g$$ | general_qa | 223 |
The following is a multiple choice question (with answers).
===Question
Data for the vapor pressure, P of a liquid with a normal boiling point of 27°C is given. A plot oflnPvs1/T results in a straight line. Calculate the heat of vapori-zation of the liquid if the straight line extrapolated to infinite temperature yield... | 6.855 kcal | general_qa | 141 |
The following is a multiple choice question (with answers).
===Question
In the shallow sea PEKERIES model, the seabed and sea surface are treated as interfaces between two planes, with the sea surface being acoustically ( ) interface.
===Choices
Absolutely Soft
Extremely Tough
Fully Dense
Totally Solid
Completely Soli... | Absolutely Soft | general_qa | 91 |
The following is a multiple choice question (with answers).
===Question
A current carrying infinitely long wire is kept along the diameter of a circular wire loop, without touching it. The correct statement(s) is(are)
===Choices
The emf induced in the loop is zero if the current is constant and decreasing at a steady ... | The emf induced in the loop is zero if the current decreases at a steady rate. | general_qa | 140 |
The following is a multiple choice question (with answers).
===Question
In culturing E. coli, spontaneous point mutations are mostly caused by ___.
===Choices
Periodic transformations of jasper elements
Transitional reversals of oxygen molecules
Bilateral isomerization of helium particles
Reciprocal isomeric shifts of... | Reciprocal isomeric shifts of hydrogen atoms | general_qa | 112 |
The following is a multiple choice question (with answers).
===Question
What does Kuhn think is the relationship between paradigms?
===Choices
Paradigms are irrecommensurable.
Paradigms are functionally equivalent.
Paradigms are inherently similar.
Paradigms are generally equivalent.
Paradigms are significantly divers... | Paradigms are irrecommensurable. | general_qa | 112 |
The following is a multiple choice question (with answers).
===Question
A circular beam of light of diameter $d = 2\ cm$ falls on a plane surface of glass. The angle of incidence is $60^{\circ}$ and refractive index of glass is $\mu = 3/2$. The diameter of the refracted beam is
===Choices
3.48 cm
$$2.52 cm$$
2.62 cm
3... | $$3.26 cm$$ | general_qa | 142 |
The following is a multiple choice question (with answers).
===Question
During the process of mitosis in cells, which phenomenon does not occur?
===Choices
Separation of Homologous Chromosome Pairs
Sister Chromatid Segregation
DNA Replication Process Restoration
Nuclear membrane reassembly
Spindle Assembly
Regulation ... | Separation of Homologous Chromosome Pairs | general_qa | 106 |
The following is a multiple choice question (with answers).
===Question
On what day, month, and year was Kommunistisk Forbund founded?
===Choices
21 January 1974
21 January 1978
21 January 1979
21 January 1972
21 January 1971
21 January 1976
21 January 1977
21 January 1973
21 January 1970
21 January 1975 | 21 January 1973 | general_qa | 123 |
The following is a multiple choice question (with answers).
===Question
We say that a function $f:\mathbb{N}\to\mathbb{R}$ is a MODEL FUNCTION if
$$f(mn) = f(m)f(n)+f(m)+f(n)$$
for all relatively prime positive integers $m$ and $n$ and if
$$\sum_{d\mid n} f(d) = n-\tau(n)$$
for all $n\ge 100$ (here $\tau(n)$ is the num... | 894 | general_qa | 200 |
The following is a multiple choice question (with answers).
===Question
In Fig. two cells have equal e.m.f. $ E $ but internal resistances are $ r_{1} $ and $ r_{2} $. If the reading of the voltmeter is zero, then relation between $ R, r_{1} $ and $ r_{2} $ is
===Choices
R=r_{2}-r_{1}
R=r_{2}+r_{1}
$$ R=r_{1}+r_{2} $$... | $$ R=r_{1}-r_{2} $$ | general_qa | 200 |
The following is a multiple choice question (with answers).
===Question
A 60 mm radius wheel is connected to a fixed support D by two links AB and BD. At the instant shown, the velocity of the centre A of the wheel is 30 m/s to the left. Rod AB and BD have equal length $\ell $=5 m.
The angular velocity of rod AB will b... | $3\sqrt { 2 } $ rad/sec | general_qa | 169 |
The following is a multiple choice question (with answers).
===Question
Consider a multiprocessor system with 32 processors, where the access time to remote memory is 200 ns. Assume all other memory accesses hit the local memory. When a remote request is issued, the processor is suspended. The processor clock frequency... | 2.6 times | general_qa | 168 |
The following is a multiple choice question (with answers).
===Question
For the detection of a deterministic signal with unknown amplitude in Gaussian white noise, which of the following statements is correct?
===Choices
Compared to the optimal detector, the signal-to-noise ratio (SNR) loss is significant
When the sig... | When the sign of the amplitude is known, the detector is a uniformly most powerful (UMP) detector | general_qa | 276 |
The following is a multiple choice question (with answers).
===Question
From the perspective of communication theory, the ocean can be seen as a random (), () filter that transforms the signals emitted by sound sources.
===Choices
Time static, space stand still
Time varies, space varies
Time infinite, space finite
Tim... | Time changes, space varies | general_qa | 104 |
The following is a multiple choice question (with answers).
===Question
What is the masterpiece of rococo decoration?
===Choices
The gallery of the House of Roys in Marseille.
The foyer of the House of Velary in Lyon.
The library of the House of Chloës in Cannes.
The parlor of the House of Sobies in Paris.
The drawing... | The parlor of the House of Sobies in Paris. | 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 values of m for which a regular polygon with m sides cannot be constructed with ruler and compass, based on the classical constructions in Euclidean geometry. Given the input x_list (a serie... | [81, 82, 83, 84, 86, 87, 88, 89, 90, 91] | general_qa | 541 |
The following is a multiple choice question (with answers).
===Question
In the Fe-Si system, $e_{\text{Si}}^{\text{Si}} = 0.11$, and $\log \gamma_{\text{Si}}^{0} = -\frac{6320}{T} + 0.37$. Find the excess entropy $S^{\text{ex}} (\text{Si})$ and $\Delta H (\text{Si})$ of silicon when $x [ \text{Si} ] = 0.3$ at 1500°C.
... | $$
- 6 8. 1 3 6 \mathrm{J},1 2 0 8 5 2 \mathrm{~ J / m o l ~}
$$ | general_qa | 561 |
The following is a multiple choice question (with answers).
===Question
The theoretical foundation of Marxist political economy is
===Choices
Dialectical Materialism and Historical Materialism
Materialist Conception of History and Dialectical Materialism
Dialectical Materialism and Materialist Conception of History
Su... | Dialectical Materialism and Historical Materialism | general_qa | 116 |
The following is a multiple choice question (with answers).
===Question
A slab of thickness 10 cm is kept on x-y (z=0) and its refractive index varies as $ \mu=1.63 (1+ \frac {Z}{20} ) $ where Z is in cm. if it is viwed from top its apparent thickness will be (in cm)
===Choices
3
3.5
3.75
4.75
5
6
4.15
4.25
4.5
4 | 4 | general_qa | 121 |
The following is a multiple choice question (with answers).
===Question
The elevation of the benchmark is 72.260 meters in the elevation system ( ).
===Choices
1956 Yellow Sea Elevation System
1954 Yellow Sea Elevation System
1985 National Elevation Datum
1969 Global Elevation System
1974 Continental Elevation Datum
1... | 1956 Yellow Sea Elevation System | general_qa | 125 |
The following is a multiple choice question (with answers).
===Question
A sealed barium titanate ceramic cylinder with an outer diameter of 5 cm, an inner diameter of 4.5 cm, and a length of 10 cm, $K_{\mathrm{31}}$ 1 = 0.19, $s\frac{E}{11} = 8.6 \times 10^{-12}$ m$^{2}$/N, $\frac{\varepsilon33}{\varepsilon0}$ ≈ 1200. ... | -97dB (reference value $\mathrm{1V / \mu bar}$) | general_qa | 317 |
The following is a multiple choice question (with answers).
===Question
Assuming the signal $x(t)=(\frac{\sin(50\pi t)}{\pi t})^2$ has a Fourier transform result of $X(j\omega)$, with a sampling frequency $\omega_s=150\pi$, the sampled signal is $g(t)$, and the Fourier transform of $g(t)$ is $G(j\omega)$. If $G(j\omega... | 50\pi | general_qa | 209 |
The following is a multiple choice question (with answers).
===Question
Which Chinese botanist successfully experimented with 'corn cultivation and forest shading techniques for cultivating Coptis chinensis' and invented the natural bed method for the sexual reproduction of Gastrodia elata?
===Choices
Xu Jintang's co-... | Xu Jintang | general_qa | 175 |
The following is a multiple choice question (with answers).
===Question
The angle between the tensile axis and the slip direction of the zinc single crystal before stretching is $45^{\circ}$. After stretching, the angle between the force axis and the slip direction is $30^{\circ}$. Try to calculate the elongation of th... | $$
\approx4 1. 4 \%
$$ | general_qa | 217 |
The following is a multiple choice question (with answers).
===Question
A body of area $ 0.8 \times 10^{-2} m{-2}$ and mass $ 5 \times 10^{-4}kg$ directly faces the sun on a clear day. The body has an emissivity of 0.8 and specific heat of 0.8 cal/kg K. The surroundings are at $27^{0}C$. (solarconstant = 1.4 kW/$m^{2}$... | $$85^{0}C$$ | general_qa | 216 |
The following is a multiple choice question (with answers).
===Question
Steam at $t_s = 40$°C and R134a vapor at $t_{\varepsilon} = 40$°C. Film condensation on an isothermal vertical wall. Try to calculate the liquid film thickness at 0.5m away from $x = 0$. Assume $\Delta t = t_w - t_x = 5$°C.
===Choices
$$
2. 0 4 6 ... | $$
2. 0 4 6 \times1 0^{-1} \mathrm{m m}
$$ | general_qa | 360 |
The following is a multiple choice question (with answers).
===Question
What are the delta deposits actually?
===Choices
Tropical zones
Marine facies
Volcanic material
Maritime and terrestrial mixed
Fluvial sediment
Coastal deposition
Glacial sediment
Continental
Desert areas
Oceanic basins | Maritime and terrestrial mixed | general_qa | 69 |
The following is a multiple choice question (with answers).
===Question
The three views of the report are ( ).
===Choices
Data entry view, layout view, and design preview view
Datasheet View, Layout Preview View, and Design View
Design preview, report preview, and data sheet view
Report view, print layout view, and da... | Design view, print preview view, and layout preview view | general_qa | 145 |
The following is a multiple choice question (with answers).
===Question
"The ovule of a rose is analogous to the capsule of a moss." Explain what is wrong with this statement.
===Choices
The ovule of a rose and the capsule of a moss are identical in function.
The capsule of a moss contains seeds, while the ovule of a ... | The ovule of a rose and the capsule of a moss differ in that the ovule produces only those spores which will develop into female gametophytes, while the capsule produces spores which will give rise to bisexual gametophytes. | general_qa | 282 |
The following is a multiple choice question (with answers).
===Question
In a pure water moderator, some boric acid $\mathrm{H_{3} B O_{3}}$ is added to increase the thermal neutron absorption cross-section by 10%. Given that the macroscopic thermal neutron absorption cross-section of water is $\Sigma_{\gamma\mathrm{k}}... | $$52.524~\mathrm{p p m}$$ | general_qa | 363 |
The following is a multiple choice question (with answers).
===Question
In the butyl acetate production workshop, a batch reactor is used, operating at a temperature of 100°C. Each batch is charged with 1 kmol of acetic acid and 4.96 kmol of n-butanol, with the addition of 0.032% sulfuric acid (based on the total feed)... | 0.535h,4.18h,52.9h | general_qa | 444 |
The following is a multiple choice question (with answers).
===Question
Adolescents begin to become aware of their gender, aware of the differences and connections between the sexes, and show that their ___.
===Choices
The Awakening and Development of Sexual Awareness
Disinterest in family activities increases.
Exerci... | The Awakening and Development of Sexual Awareness | general_qa | 113 |
The following is a multiple choice question (with answers).
===Question
The rise in prices due to the operators' demand for increased profits is called ().
===Choices
earnings-driven inflation
profit-driven inflation
profit-margin inflation
demand-driven inflation
operational inflation
supply-side inflation
cost-push ... | profit-driven inflation | general_qa | 75 |
The following is a multiple choice question (with answers).
===Question
When the "0" point on the echosounder depth gauge flashes, it indicates _____.
===Choices
The ultrasonic waves begin to emit
Ultrasound waves start to weaken
The ultrasonic waves begin to receive
Depth measurements become inaccurate
The ultrasonic... | The ultrasonic waves begin to emit | general_qa | 111 |
The following is a multiple choice question (with answers).
===Question
When researchers analyze climate changes in geological history, they find that glacial periods lasted about 100,000 years, during which the global average temperature dropped by 5 degrees Celsius. If, after the end of the ice age, the global temper... | 0.05 °C/year | general_qa | 183 |
The following is a multiple choice question (with answers).
===Question
What symptom of spinal cord injury hemisection syndrome manifests below the plane of injury?
===Choices
Loss of ipsilateral hearing and taste, loss of contralateral proprioception, contralateral motor loss
Loss of ipsilateral vibration and touch, ... | Loss of contralateral warmth and pain, loss of ipsilateral proprioception, ipsilateral motor loss | general_qa | 247 |
The following is a multiple choice question (with answers).
===Question
The net potential energy between two adjacent ions, $E_{N},$ that $i s$
$$
E_{N}=-{\frac{A} {r}}+{\frac{B} {r^{n}}}
$$
The bonding energy $E_{0}$ in terms of the parameters $A$, $B$ is ().
===Choices
$$
-\frac{A} {\left( \frac{n B} {A} \right)^{1 ... | $$
-\frac{A} {\left( \frac{A} {n B} \right)^{1 / ( 1-n )}}+\frac{B} {\left( \frac{A} {n B} \right)^{n / ( 1-n )}}
$$ | general_qa | 701 |
The following is a multiple choice question (with answers).
===Question
For a tribasic acid, $H_{3}A$, $K_{a1} = 2 \times 10^{-3}$, $K_{a2} = 5 \times 10^{-9}$ and $K_{a3} = 4 \times 10^{-12}$. The value of $\frac{[A^{3-}]}{[H_{3}A]}$ at equillibrium in an aqueous solution originally having $0.2 M - H_{3}A$ is
===Choi... | $$5 \times 10^{-18}$$ | general_qa | 245 |
The following is a multiple choice question (with answers).
===Question
The connection between shotcrete in highway tunnels and ( ) is the most effective.
===Choices
I-beam steel arch frame
Metal mesh arch framework
H-beam steel arch frame setup
Inverted steel arch frame
Concrete lining arch frame
Hollow block arch fr... | Grid arch frame | general_qa | 96 |
The following is a multiple choice question (with answers).
===Question
Which of the following characteristics of the pulp chamber morphology of young permanent maxillary incisors is correct?
===Choices
Maximum mesial and distal tangential widths at the incisal sloping ridge.
Maximum proximal and distal mid diameters ... | Maximum proximal and distal mid diameters at the proximal tangential ridge. | general_qa | 203 |
The following is a multiple choice question (with answers).
===Question
In what month and year was Nikolai Talyzin dismissed from Nikolai Ryzhkov's government, along with many other conservatives, during the period of perestroika?
===Choices
April 1989
November 1989
December 1989
March 1990
May 1989
June 1989
August 1... | September 1989 | general_qa | 122 |
The following is a multiple choice question (with answers).
===Question
The basic principles for raising medical social insurance funds include ( ):I. Multi-party cost-sharing principleII. Principle of determining revenue based on expenditure, maintaining balance between income and expenditure, with slight surplusIII. ... | I,II,III | general_qa | 133 |
The following is a multiple choice question (with answers).
===Question
As shown in figure, when a spherical cavity (centred at $O$) of radius $1$ is cut out of a uniform sphere of radius $R$ (centred at $C$), the centre of mass of remaining (shaded) part of sphere is at $G$ i.e., on the surface of the cavity. $R$ can ... | $$\left( { R }^{ 2 }+R+1 \right) \left( 2-R \right) =1$$ | general_qa | 363 |
The following is a multiple choice question (with answers).
===Question
Two masses $m_{1}=1\ kg$ and $m_{2}= 2\ kg$ are connected by a light in extensible string and suspended by means of a weightless pulley. Assuming that both the masses starts from rest, the distance travelled by the centre of mass in two second is $... | $$\dfrac{20}{9}m$$ | general_qa | 192 |
The following is a multiple choice question (with answers).
===Question
A pipe is drawn from a pool of constant water level, consisting of three sections with cross-sectional areas of $A_{1} = 0.05 \, \text{m}^{2}$, $A_{2} = 0.03 \, \text{m}^{2}$, and $A_{3} = 0.04 \, \text{m}^{2}$, respectively. The pipe discharges in... | $$
v_{3}=9. \, 9 \, \, \, ( {\mathrm{m / s}} )
$$
$$
Q \!=\! 0. \, 3 9 6 \, \, \, ( \mathrm{m^{3}} / \mathrm{s} )
$$ | general_qa | 848 |
The following is a multiple choice question (with answers).
===Question
Since the GD library only supports UTF-8 Chinese encodings, the () function can be used for transcoding.
===Choices
mb_convert_encoding()
encoding()
utf8_decode()
ctype()
convert_encoding()
utf8_encode()
convert_coding()
charset()
iconv()
setlocal... | iconv() | general_qa | 71 |
The following is a multiple choice question (with answers).
===Question
A plaintiff sued a defendant in federal district court, claiming that the defendant breached a contract with the plaintiff. Based on a preliminary investigation, the defendant's attorney believed that the contract could be interpreted as illusory a... | The attorney may plead both defenses, regardless of how they are labeled. | general_qa | 321 |
The following is a multiple choice question (with answers).
===Question
The last unbranched fin ray of the carp is a _____ hard spine.
===Choices
jagged
smooth
pointed
curved
blunt
flexible
glossy
porous
serrated
segmented | serrated | general_qa | 63 |
The following is a multiple choice question (with answers).
===Question
Suppose a system is composed of two independently functioning binary components in series (binary components have only two states: functioning normally or failing). Components 1 and 2 have reliabilities of $p_{1}$ and $p_{2}$, respectively, both of... | $$
\hat{p}_{1} \!=\! 0. 7 1 5 \ 0, \quad\hat{p}_{2} \!=\! 0. 8 2 9 \ 0.
$$ | general_qa | 866 |
The following is a multiple choice question (with answers).
===Question
Given the following bond enthalpies:
$$B.E.(N \equiv N)=942\ kJ/mol;BE(H-H)=436\ kJ/mol$$
$BE(N-N)=163\ kJ/mol, BE(N-H)=390\ kJ/mole$ Determine enthalpy change for the following polymerisation reaction per mole of $N_2(g)$ consumed-
$$nN_2(g)+nH_2(... | $$272\ kJ$$ | general_qa | 203 |
The following is a multiple choice question (with answers).
===Question
Given a unit negative feedback second-order system (without open-loop zeros), when the input sinusoidal signal has an amplitude $M_0=1$ and the frequency is adjusted to $f=\frac{5}{\pi}$ Hz, the steady-state response has an amplitude of 2 and a pha... | $K = 5$ | general_qa | 172 |
The following is a multiple choice question (with answers).
===Question
After the mid-19th century, China's economy underwent drastic changes, and market competition became increasingly fierce. Before the 1960s and 1990s, the main commodities exported by the great powers to China were __.
===Choices
Spices and ceramic... | Opium and cotton textiles | general_qa | 131 |
The following is a multiple choice question (with answers).
===Question
The Fourier transform of sequence $x(n)=\begin{cases} {2^{n},n\leq0, and\ n\ even}\\{0 ,odd} \end{cases}$ is ( ).
===Choices
$$\frac{1} {1 + 0. 2 5 \mathrm{e}^{-j 2 \omega}}$$
$$\frac{1} {1-0. 2 5 \mathrm{e}^{-j 2 \omega}}$$
$$\frac{1} {1-0. 2 5 \... | $$\frac{1} {1-0. 2 5 \mathrm{e}^{j 2 \omega}}$$ | general_qa | 313 |
The following is a multiple choice question (with answers).
===Question
When a spring oscillator undergoes simple harmonic motion, its amplitude is $A$. What is the instantaneous displacement value when its kinetic energy equals its elastic potential energy?
===Choices
$$
x={\frac{3A} {\sqrt{2}}}
$$
$$
x={\frac{A} {4\... | $$
x={\frac{A} {\sqrt{2}}}
$$ | general_qa | 224 |
The following is a multiple choice question (with answers).
===Question
Determine which of the following statements regarding groups and subgroups is INCORRECT.
===Choices
Every group has at least two subgroups (itself and the trivial subgroup).
A subgroup can have 2007 elements.
Every subgroup is a subset of the grou... | The intersection of two subgroups is not necessarily a subgroup of either subgroup. | general_qa | 205 |
The following is a multiple choice question (with answers).
===Question
Which character did Van Dyke Parks play in "Twin Peaks"?
===Choices
Joey Banks
Jim Beam
John Ray
James Hurley
John Ruth
Leo Johnson
Ben Horne
Frank Truman
Jack Racine
Dale Cooper | Jack Racine | general_qa | 65 |
The following is a multiple choice question (with answers).
===Question
What is the reason why Huang Yuansheng is known as the "Wizard of the Newspaper World"?
===Choices
exceptional translation and language skills
precise financial management expertise
expertise in digital technology integration
extraordinary skills ... | vivid writing and deep analysis | general_qa | 106 |
The following is a multiple choice question (with answers).
===Question
According to the characteristics of individuals in the perceptual process, intelligence can be divided into ___.
===Choices
Independent and submissive
analytical type, integrative type and analytical integrative type
verbal type, spatial type, and... | analytical type, integrative type and analytical integrative type | general_qa | 137 |
The following is a multiple choice question (with answers).
===Question
Who was awarded the 2020 Euler Medal by the Institute of Combinatorics and Its Applications?
===Choices
Marston Conder (2022)
Marston Conder (2020, Posthumous)
Marston Conder (2020, Shared)
Marston Conder (2021)
Marston Conder (2018)
Marston Conde... | Marston Conder | general_qa | 150 |
The following is a multiple choice question (with answers).
===Question
If 5 watts/meter^2 is thePoyntingvector of a plane wave traveling in free space, find its average energy density.
===Choices
(2/4) erg/meter^3
(1/6)erg/meter^3
(1/8) erg/meter^3
(1/5) erg/meter^3
(1/2) erg/meter^3
(3/4) erg/meter^3
(3/6) erg/meter... | (1/6)erg/meter^3 | general_qa | 156 |
The following is a multiple choice question (with answers).
===Question
A 20-year-old man who has multiple sexual partners and does not use barrier precautions has had a non-tender ulcer on his penis for the past week. On physical examination, the 0.6-cm lesion has a firm, erythematous base and sharply demarcated borde... | Perivascular inflammation with plasma cells | general_qa | 206 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.