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 initial concentration of a reactant in a second-order reaction is $0.4 \times 10^{3} \mathrm{mol/m}^{3}$. Within 80 minutes, 30% of this reaction is completed. Determine the time required for the reaction to reach 80% completion.
===Choices
$6... | $746min$ | general_qa | 145 |
The following is a multiple choice question (with answers).
===Question
What is the primary purpose of acidifiers in pig feed?
===Choices
To improve the feed's palatability
To inhibit the growth of harmful bacteria in the feed
To promote faster fat deposition in pigs
To boost the amino acid profile in the feed
To enha... | To inhibit the growth of harmful bacteria in the feed | general_qa | 120 |
The following is a multiple choice question (with answers).
===Question
A 22-year-old female, depressed for 3 months, poor nighttime sleep, severe to the point of being unable to sleep all night, feeling weak and dizzy during the day, and feeling that the burden of study and life is heavy, diagnosed with depression. Th... | Fluoxetine | general_qa | 128 |
The following is a multiple choice question (with answers).
===Question
Let $\mathcal{P}$ be a parabola with vertex $V$ , focus $F$ , and directrix $\ell$ . $FV$ intersects $\ell$ at $D$ . Let $A$ be a point on $\mathcal{P}$ , and suppose that the intersection of $AD$ and $\mathcal{P}$ is $B$ . Given that $AB=3$ and $B... | 441 | general_qa | 175 |
The following is a multiple choice question (with answers).
===Question
A cubical block of wood of edge $3 cm$ floats in water. The lower surface of the cube just touches the free end of a vertical spring fixed at the bottom of the pot. The maximum weight that can be put on the block without wetting it is :(Density of ... | $$0.354 N$$ | general_qa | 179 |
The following is a multiple choice question (with answers).
===Question
What is the mathematical description of Euler's differential equation of motion at each point?
===Choices
Obey Newton's Second Law
Objects maintain a velocity unless acted upon
Mass flow rates are continuously variable
Force equals mass divided by... | Obey Newton's Second Law | general_qa | 102 |
The following is a multiple choice question (with answers).
===Question
In liquid-phase bimolecular adsorption, U-shaped adsorption refers to the adsorption process where the adsorbent ( ).
===Choices
The curve always preferentially adsorbs one component
The solvent is adsorbed first, followed by the solute
Equal pres... | The curve always preferentially adsorbs one component | general_qa | 154 |
The following is a multiple choice question (with answers).
===Question
In which year did Yasser Arafat (a Palestinian political leader) enroll in the University of King Fuad I?
===Choices
1946
1941
1944
1943
1949
1948
1940
1945
1942
1947 | 1944 | general_qa | 91 |
The following is a multiple choice question (with answers).
===Question
The knowledge-based evolution of enterprise management is reflected in the following aspects:
I. Emphasizing production optimization and cost reduction through knowledge innovation
II. Knowledge becomes the core asset of enterprises, and knowledge ... | II,III,IV | general_qa | 142 |
The following is a multiple choice question (with answers).
===Question
In the following concepts regarding the in agricultral machinery, which of the following statements are incorrect? (Need to include all incorrect options):
1. Dehydration involves the simultaneous application of heat and removal of moisture from fo... | 2, 3, 4, and 5 | general_qa | 340 |
The following is a multiple choice question (with answers).
===Question
A fiber optic communication system uses Phase Shift Keying (PSK) modulation technology, with a modulation index of 4 and a carrier frequency of 200 GHz. Calculate the maximum data rate of the system under ideal conditions (Gbps).
===Choices
800
11... | 800 | general_qa | 108 |
The following is a multiple choice question (with answers).
===Question
The following does not belong to the forestland ().
===Choices
Pasture Land
Urban Green Space
Bare Land
Orchard
Riverbed
Rocky Slope
Dry Land Farm
Mangrove Swamp
Cultivated Land
Desert Vegetation | Cultivated Land | general_qa | 70 |
The following is a multiple choice question (with answers).
===Question
In the comprehensive evaluation of the teaching process, let $U = \{ \text{clear and easy to understand}, \text{proficient with the teaching materials}, \text{lively and interesting}, \text{neat and clear blackboard writing} \}$, and $V = \{ \text{... | $$\underset{\sim}{B}=( 0. 3 3, 0. 4 2, 0. 1 7, 0. 0 8 )$$ | general_qa | 696 |
The following is a multiple choice question (with answers).
===Question
What is the amount of heat transferred when 1500 kg/h of nitrobenzene is cooled from 80°C to 20°C?
===Choices
42.5 $kW$
41.7 $kW$
44.9 $kW$
47.3 $kW$
46.5 $kW$
43.2 $kW$
39.4 $kW$
45.1 $kW$
38.9 $kW$
40.2 $kW$ | 42.5 $kW$ | general_qa | 131 |
The following is a multiple choice question (with answers).
===Question
The diameter of the central line of an iron ring is $D = 40 \, \text{cm}$. A single layer of surface-insulated wire is wound uniformly around the ring, carrying a steady current. If a 1.0 mm wide air gap is cut in the iron ring, the magnetic flux t... | $$
3. 2 \times1 0^{2}
$$ | general_qa | 333 |
The following is a multiple choice question (with answers).
===Question
Which Chinese scientist first succeeded in developing a genetically modified fish?
===Choices
Li Zhensheng
Wang Daohong
Zhu Zuoyan
Zhang Yaping | Zhu Zuoyan | general_qa | 51 |
The following is a multiple choice question (with answers).
===Question
Which of the following sets of phrases best summarizes the following product?
Product Title: Mytee Products 7' x 14' Dump Truck Vinyl Coated Mesh Tarps Cover with 6 Inch 18oz Double Pocket
Product Description: Size: 7 ft. x 14 ft. PVC Dum... | trailer tarp, cover, dump truck | general_qa | 367 |
The following is a multiple choice question (with answers).
===Question
Two objects A and B when placed in placed in turn in front of a concave mirror of focal length 7.5 cm give images of equal size. If A is three times the size of B and is placed 30 cm from the mirror, find the distance of B from the mirror.
===Choi... | -15 cm | general_qa | 134 |
The following is a multiple choice question (with answers).
===Question
What may occur during rapid intravenous infusion of saline?
===Choices
Increased renal tubular reabsorption
Increased blood pressure in the glomerular capillaries
Increased pressure in the renal capsule
Decreased plasma colloid osmotic pressure
De... | Decreased plasma colloid osmotic pressure | general_qa | 105 |
The following is a multiple choice question (with answers).
===Question
What are the test methods for fabric stretch?
===Choices
Strip sampling method, grab sampling method
Twill weave analysis, loop stretch evaluation
Yarn pull test, textile tension method
Fiber entanglement test, buckle immersion method
Shear stress... | Strip sampling method, grab sampling method | general_qa | 117 |
The following is a multiple choice question (with answers).
===Question
A certain highway bridge is composed of multiple spans of simply supported beams, utilizing prestressed concrete box-section beams. The concrete strength grade of these box-section beams is C40, with an elastic modulus $E_{\mathrm{c}}=3.25 \times 1... | 0.28 | general_qa | 235 |
The following is a multiple choice question (with answers).
===Question
Which of the following descriptions of the middle section in a trio is correct?
===Choices
The middle section must be composed of a texture with three voices
The middle section mainly appears in the sonata form structure
The trio in a compound ter... | The trio in a compound ternary form may not include the middle section | general_qa | 84 |
The following is a multiple choice question (with answers).
===Question
The horizontal dial reads 300° when the latitude and longitude instrument is placed at point A and aimed at point B. To set the value of the horizontal angle of $45^\circ$ to the left of the line AB, the reading of the horizontal dial should be ( )... | 3459 | general_qa | 125 |
The following is a multiple choice question (with answers).
===Question
Among the following elements, the biogeochemical cycles are typical sedimentary cycles
===Choices
Phosphorus
Aluminum
Oxygen
Hydrogen
Carbon
Sulfur
Iron
Magnesium
Helium
Nitrogen | Phosphorus | general_qa | 64 |
The following is a multiple choice question (with answers).
===Question
A classic hydrogen atom, at time $t=0$, has an electron in the first Bohr orbit. Give the expression for the time required for the orbit radius to decay to zero due to radiation (assuming the energy consumed weekly is very small compared to the rem... | $$
\frac{4 \pi^{2} \varepsilon_{0}^{2} c^{3} m^{2} a_{0}^{3}} {e^{4}}
$$ | general_qa | 474 |
The following is a multiple choice question (with answers).
===Question
According to IMO regulations, the display device of the echo sounder must have______.
===Choices
Recording type
Pointer type
Rotating type
Digital type
Pattern type
Projection type
Motion type
Flashing type
Pulsating type
Image type | Recording type | general_qa | 68 |
The following is a multiple choice question (with answers).
===Question
A mixture of hydrogen and nitrogen gases produces ammonia under chemical equilibrium at 400 °C and 10 atm, resulting in 3.85% ammonia (by volume). Find: the equilibrium constant $K_{p}$ for the reaction $3 \mathrm{H}_{2}+\mathrm{N}_{2} \rightleftha... | $$
1. 6 4 4 \times1 0^{-4} \mathrm{~ a t m}^{-2}
$$ | general_qa | 422 |
The following is a multiple choice question (with answers).
===Question
What is the typical carbon content of gray cast iron?
===Choices
2.0%~3.5%
<1.5%
>2.11%
1.1%~2.0%
2.2%~3.8%
>5.0%
2.5%~4.0%
<2.11%
3.5%~5.5%
4.1%~6.0% | 2.5%~4.0% | general_qa | 104 |
The following is a multiple choice question (with answers).
===Question
A wideband noise source is towed by a minesweeper, and its radiated noise detonates acoustic mines to achieve the purpose of minesweeping. The noise source spectrum level is set at 130 dB, the working bandwidth of the acoustic receiver on the swept... | 224m | general_qa | 173 |
The following is a multiple choice question (with answers).
===Question
For first-episode schizophrenics, how many years is antipsychotic therapy recommended?
===Choices
3-4
1-2
2-3
7-8
8-9
5-6
6-7
10-11
9-10
4-5 | 2-3 | general_qa | 77 |
The following is a multiple choice question (with answers).
===Question
In which document are the rules for the treatment of prisoners of war during international conflicts primarily outlined?
===Choices
The Third Geneva Convention
The Fifth Geneva Agreement
The Third Geneva Protocol
The International Conflict Accord
... | The Fourth Geneva Convention | general_qa | 87 |
The following is a multiple choice question (with answers).
===Question
It is known that the mileage of a certain route intersection is K3+135.120. The main elements of the circular curve set here are: tangent length is 44.072, curve length is 84.474, external arrow distance is 7.873, and tangent curvature difference i... | K3+091.048 | general_qa | 216 |
The following is a multiple choice question (with answers).
===Question
Which fungal class does Aspergillus niveus belong to?
===Choices
Sordariomycetes
Eurotiales
Dothideomycetes
Onygenomycetes
Eurotiomycetes
Ascomycetes
Aspergillomycetes | Eurotiomycetes | general_qa | 73 |
The following is a multiple choice question (with answers).
===Question
What effect does the drift factor it reflect?
===Choices
Mass diffusion is influenced by specific material properties,
Mass distribution is impacted by the original stream dynamics,
Mass exchange is influenced by the principal current alterations,... | Mass transfer is affected by the main flow movement, | general_qa | 117 |
The following is a multiple choice question (with answers).
===Question
What are the effects of the ice layer on the surface of the lake on the fish living in the lake?
① Lack of oxygen is detrimental to fish survival.
② Slows down the decline in water temperature.
③ Increases ammonia in the water.
④ Reduces water temp... | ①+② | general_qa | 138 |
The following is a multiple choice question (with answers).
===Question
Assuming a basis of one standard cubic foot of CO burned, determinethe adiabatic flame temperature for the perfect combustionof CO with astoichiometricamount of air, when thereactant gases are @ 60°F and 1atmpressure. Also correctfor CO_2 dissociat... | 3820°F | general_qa | 140 |
The following is a multiple choice question (with answers).
===Question
If the heart is affected by palpitations, it can be confirmed that there is an organic lesion in the heart. This is commonly seen in some congenital heart diseases and __________.
===Choices
peripheral artery disease
elevated cholesterol levels
in... | heart valve stenosis | general_qa | 114 |
The following is a multiple choice question (with answers).
===Question
When marching in step, the speed is () steps per minute.
===Choices
70-75
80-90
140-150
95-115
180-190
100-110
130-136
116-122
123-129
160-170 | 116-122 | general_qa | 104 |
The following is a multiple choice question (with answers).
===Question
In the ionic equation, $xCH_3CH_2OH+yI_2+zOH^-\rightarrow CHI_3+{HCO_2}^-+I^-+H_2O$, the valuexs of $x,y,z$ are:
===Choices
$$x=1, y=8, z=8$$
x=1, y=4, z=8
x=1, y=4, z=5
x=1, y=3, z=6
$$x=1, y=6, z=4$$
x=1, y=4, z=7
$$x=1, y=4, z=6$$
$$x=1, y=8, z... | $$x=1, y=4, z=6$$ | general_qa | 206 |
The following is a multiple choice question (with answers).
===Question
The Gutenberg surface inside the Earth is the interface between what?
===Choices
Upper core and lower core
Upper crust and lower crust
Crust and core
Crust and mantle
Mantle and core
Lithosphere and asthenosphere
Inner core and outer core
Upper ma... | Mantle and core | general_qa | 88 |
The following is a multiple choice question (with answers).
===Question
A volume of seawater equal to that of the oceans cycles through submarine hydrothermal systems approximately every __________.
===Choices
8 million years
5 million years
50 million years
year
25 million years
20 million years
5,000 years
10 millio... | 10 million years | general_qa | 85 |
The following is a multiple choice question (with answers).
===Question
The backbone structure of sphingolipids is ____.
===Choices
sphinganine
sphingosine
lecithin
phosphatidylcholine
stearic acid
glycolipid
cholesterol
ceramide
fatty acid
glycerol | sphingosine | general_qa | 76 |
The following is a multiple choice question (with answers).
===Question
In a grouped report, the maximum number of fields that can be used for grouping is ().
===Choices
9
13
11
6
8
10
5
12
15
7 | 10 | general_qa | 60 |
The following is a multiple choice question (with answers).
===Question
What is the dissociation equilibrium constant of a certain monoprotic weak acid after it is mixed with 50 cm³ of 0.40 mol·dm⁻³ NaOH solution and then diluted to 250 cm³, resulting in a solution with a pH of 2.72?
===Choices
$$
7. 2 \times1 0^{-4}
... | $$
6. 3 \times1 0^{-4}
$$ | general_qa | 241 |
The following is a multiple choice question (with answers).
===Question
20 ml of 0.2 M HCN is titrated with 0.2 M NaOH. The pH at 20% neutralization and at the equivalence point will be respectively ($k_{a}$ for HCN= $4\times 10^{-10})$ (Neglect $H^{+}$ from water)
===Choices
8.80 and 9.4
8.80 and 10.60
9.4 and 11.2
9... | 11.2 and 8.80 | general_qa | 200 |
The following is a multiple choice question (with answers).
===Question
Under certain dry conditions, as the thickness of the material increases, the critical moisture content of the material will (), while the time required for drying will ().
===Choices
Reduce, maintain
Maintain, reduce
Decrease, extend
Expand, prol... | Increase, extend | general_qa | 91 |
The following is a multiple choice question (with answers).
===Question
Prolonged malnutrition can cause edema. What is the main reason for this?
===Choices
Plasma protein concentration is too low
The osmotic pressure of plasma crystalloid remains unchanged.
The plasma protein concentration remains unchanged.
Plasma p... | Plasma colloid osmotic pressure too low | general_qa | 140 |
The following is a multiple choice question (with answers).
===Question
Which of the following materials has a usage temperature that is below its glass transition temperature?
===Choices
Nylon
Ceramic
Steel
Wood
Brass
Copper
Glass
Aluminum
Plastic
Rubber | Plastic | general_qa | 61 |
The following is a multiple choice question (with answers).
===Question
The three asspects of coodinated effects of climate change and air pollution are__
===Choices
Same roots, processs interacted, and co-benefits
Identical causes, processes joined and joint benefits
Common causes, process interlinked and shared bene... | Same roots, processs interacted, and co-benefits | general_qa | 135 |
The following is a multiple choice question (with answers).
===Question
What are the types of vascular bundles in the stems of monocotyledons?
===Choices
Centered Internal Toughness Type
Looped External Flexibility Type
Clustered External Strength Type
Restricted Peripheral Confluence Type
Limited External Resilience ... | Limited External Resilience Type | general_qa | 101 |
The following is a multiple choice question (with answers).
===Question
Under Chinese law,the life insurance policy does not specify any heir or beneficiary.Zhang lost a valuable watch which was found by Li. One year later, Li sold the watch to Wang. Another year later, Wang sold the watch to Zheng. Zheng gave the watc... | Zhang can request Zhu to return the watch. | general_qa | 194 |
The following is a multiple choice question (with answers).
===Question
Who played Creon in Antigone at the Epidaurus Festival 2022?
===Choices
Vasilis Bisbikis played Creon in Antigone at the Epidaurus Festival in 2022.
Vasilis Biskikas played Creon in Antigone at the Epidaurus Festival in 2022.
Vasilis Diamantopoulo... | Vasilis Bisbikis played Creon in Antigone at the Epidaurus Festival in 2022. | general_qa | 295 |
The following is a multiple choice question (with answers).
===Question
Leaves of deciduous trees fall in an exponential rate during autumn. A large maple has 10,000 leaves and the wind starts blowing. If there are 8,000 leaves left after 3 hours, how many will be left after 4 hours?
===Choices
7200
7600
7400
7350
742... | 7426 | general_qa | 119 |
The following is a multiple choice question (with answers).
===Question
Given: A pipe with an inner diameter of 2.5 cm and a length of 15 meters has a water mass flow rate of $0.5 \mathrm{kg} / \mathrm{s}$. The inlet water temperature is 10°C. Except for a very short section at the inlet, the wall temperature at every ... | $$
4 7. 5°C
$$ | general_qa | 235 |
The following is a multiple choice question (with answers).
===Question
What is the impedance of a 1-\muf capacitor at angular frequencies of 100, 1000 and 10,000rad/sec?
===Choices
159.15 ohms, 1591.5 ohms, 15915 ohms
15915 ohms, 1591.5 ohms, 159.15 ohms
100 ohms, 1000 ohms, 10,000 ohms
100 ohms, 10,000 ohms, 1000 oh... | Both 1000 ohms, 100 ohms, 10,000 ohms and 1 kΩ, 0.1 kΩ, 10 kΩ are correct | general_qa | 270 |
The following is a multiple choice question (with answers).
===Question
Under the direct quotation method, what does it mean when the amount of domestic currency converted from a certain unit of foreign currency increases?
===Choices
The value of domestic currency increases, and the foreign exchange rate decreases
The... | The value of foreign currency increases, and the foreign exchange rate increases | general_qa | 188 |
The following is a multiple choice question (with answers).
===Question
The integral has been converted to polar coordinates. Verify that the identity is true and choose the easiest way to evaluate the integral, in rectangular or polar coordinates:
$$
\int_{0}^1 \int_{x^2}^x \frac{ y }{ \sqrt{x^2+y^2} } \, dy \, dx = \... | 1/6 * (2 - sqrt(2)) | general_qa | 257 |
The following is a multiple choice question (with answers).
===Question
What is the sex of humans and fruit flies whose sex chromosome composition is XXY?
===Choices
Humans are intersex, while fruit flies are female.
Humans are female, while fruit flies are intersex.
Humans are male, while fruit flies are female.
All ... | Humans are male, while fruit flies are female. | general_qa | 129 |
The following is a multiple choice question (with answers).
===Question
What is the reason why the pom-pom nodules of animals are removed and cannot stand, but the feeding action is normal?
===Choices
Spinal injury
Ear infection
Muscle fatigue
Viral infection
Joint inflammation
Genetic mutation
Nutritional deficiency
... | Balance dysfunction | general_qa | 79 |
The following is a multiple choice question (with answers).
===Question
A horizontal turntable with mass $M$ and radius $R$ can rotate around a vertical axis through its center without friction. A person with mass $m$ stands on the edge of the turntable, with both the person and the turntable originally at rest. When t... | $$
\frac{2 \pi m r^{2}} {m r^{2}+\frac{1} {2} M R^{2}}
$$ | general_qa | 434 |
The following is a multiple choice question (with answers).
===Question
In a storage tank with a diameter of $2 \mathrm{m}$, there is ammonia water with a mass fraction of 0.1. Due to negligence, the tank is uncovered, allowing ammonia to evaporate through molecular diffusion. Assuming the diffusion occurs through a 5m... | $$
6. 6 6 {\times} 1 0^{3} \mathrm{m o l}
$$ | general_qa | 464 |
The following is a multiple choice question (with answers).
===Question
The histological changes of tiger spotted heart are?
===Choices
Red blood cell accumulation around myocardial fibers
Fat deposition occurs in myocardial cells
Sparse neutrophil aggregation among myocardial fibers
Fat deposition occurs between myoc... | Fat deposition occurs in myocardial cells | general_qa | 121 |
The following is a multiple choice question (with answers).
===Question
What is the edible part of a citrus fruit?
===Choices
Glandular structures on the inner surface of the mesocarp
Smooth cells on the interior of the pericarp
The placenta develops from the middle and inner layers of the fruit peel.
Glandular hairs ... | Cystic hairs on the inner wall of the endocarp | general_qa | 148 |
The following is a multiple choice question (with answers).
===Question
What year did André-Jean-Jacques Deshayes retire from ballet?
===Choices
1842
1848
1841
1843
1840
1846
1845
1849
1847
1844 | 1842 | general_qa | 82 |
The following is a multiple choice question (with answers).
===Question
A machine in an amusement part consists of a cage at the end of one arm hinged at $O$ The cage revolves along a vertical circle of radius $r(ABCDFGH)$ about its hinged $O$, at constant linear speed
$\displaystyle v=\sqrt{gr}$ The cage is so attac... | the ratio of the weight reading at $A$ to that at $C=2$. | general_qa | 313 |
The following is a multiple choice question (with answers).
===Question
Given the series $\sum\limits_{n=0}^{\infty }{a_{n}}(x+3)^{n}$ converges at $x=-1$, determine the convergence or divergence of the series at $x=1$.
===Choices
converges, but the radius of convergence is unknown
diverges absolutely
converges condit... | cannot determine the convergence or divergence | general_qa | 143 |
The following is a multiple choice question (with answers).
===Question
Compared with the basic table, view definition function (), view operation function (), view data protection function ().
===Choices
weak, strong, strong
weak, weak, strong
strong, strong, weak
weak, strong, weak
strong, strong, strong
strong, wea... | strong, weak, strong | general_qa | 97 |
The following is a multiple choice question (with answers).
===Question
A man and a woman conspired together to rob a bank. As they were exiting the bank after the robbery they were confronted by armed tactical police officers. The man raised his gun at the officers and a flurry of shots followed. The man was injured b... | Yes, because the majority view is that felony murder does not apply if a co-conspirator is killed by a third person during the commission of the crime. | general_qa | 376 |
The following is a multiple choice question (with answers).
===Question
What are the characteristics of stimulated emission light and spontaneous emission light?
===Choices
Both stimulated emission light and spontaneous emission light are incoherent.
Stimulated emission light is incoherent, while spontaneous emission ... | Stimulated emission light is coherent, while spontaneous emission light is incoherent. | general_qa | 194 |
The following is a multiple choice question (with answers).
===Question
The concept of _______ refers to the boundaries of areas where human activities occur, which include both direct and indirect limitations.
===Choices
operation field
action range
action field
movement space
action sphere
action space
movement scop... | action space | general_qa | 70 |
The following is a multiple choice question (with answers).
===Question
In a positively pressurized atmosphere, there is a circular column of air at 30° $\mathbf{N}$ with a radius of 100 km. If the initial air is stationary, what is the average tangential velocity on the perimeter when the column expands to twice its o... | -5.47m/s | general_qa | 157 |
The following is a multiple choice question (with answers).
===Question
What is the proposed principle of development suitability aimed at?
===Choices
Ignoring the role of play in learning
Young children do not connect in place
Overemphasis on artistic achievements in early years
Neglecting emotional intelligence deve... | The tendency of "elementary school" in early childhood education | general_qa | 110 |
The following is a multiple choice question (with answers).
===Question
If requested to perform a compilation engagement for a nonissuer in which an accountant has an immaterial direct financial interest, the accountant is
===Choices
Independent and, therefore, may not issue a compilation report.
Not independent and, ... | Not independent and, therefore, may issue a compilation report, but may not issue a review report. | general_qa | 198 |
The following is a multiple choice question (with answers).
===Question
The four cornerstones of health include ().
===Choices
Continuous learning, active lifestyle, limited caffeine, harmonious relations
Healthy eating, routine fitness, controlled alcohol use, mental wellness
Regular stretching, balanced sleep, socia... | Moderate exercise, reasonable diet, cessation of smoking and restriction of alcohol, psychological balance | general_qa | 162 |
The following is a multiple choice question (with answers).
===Question
The boundary between the continental crust and the oceanic crust is located at__.
===Choices
the high tide line of the coast
the crest of the continental rise
the foot of the continental slope
the middle of the continental shelf
the low tide line ... | the foot of the continental slope | general_qa | 109 |
The following is a multiple choice question (with answers).
===Question
For $d=2, d=3$, what is the volume of the hyper-ellipsoid corresponding to the Mahalanobis distance $\gamma$?
===Choices
$V=V_{d} | \Sigma|^{\frac{1} {2}} \gamma^{2d}$
$V=V_{d} | \Sigma|^{\frac{1} {2}} \gamma^{d+1}$
$V=V_{d} | \Sigma|^{\frac{1} {4... | $V=V_{d} | \Sigma|^{\frac{1} {2}} \gamma^{d}$ | general_qa | 302 |
The following is a multiple choice question (with answers).
===Question
If SR = 100 torr and PR = 350 torr, then which of the following cannot be a mole fraction of A in vapour phase and a mole fraction of A in liquid phase respectively?
===Choices
$\dfrac{2}{9}$ and $\dfrac{7}{10} $
$\dfrac{3}{10}$ and $\dfrac{2}{9} ... | $\dfrac{2}{9}$ and $\dfrac{7}{10} $ | general_qa | 251 |
The following is a multiple choice question (with answers).
===Question
How to reduce or control the occurrence of secondary reactions in the sintering process to avoid aluminum loss?
===Choices
Add more calcium oxide and reduce reaction by extending desiliconization time
Adjust pouring rates, introduce more aluminum ... | Use lower dissolution temperature, quickly separate red mud and adjust caustic ratio | general_qa | 190 |
The following is a multiple choice question (with answers).
===Question
Which cells in plants perform specific functions but undergo programmed cell death?
===Choices
Tracheary elements, tracheids, and fibers
Thick-walled parenchymatous cells, fibers, sieve elements
Searching for guard cells, sieve cells, and collench... | Tracheary elements, tracheids, and fibers | general_qa | 174 |
The following is a multiple choice question (with answers).
===Question
A 10-year-old male has had sudden, severe, colicky pain under the xiphoid process for 3 hours. During the episodes, he is restless, moaning in pain, accompanied by nausea and vomiting, and appears normal after the episodes. Examination shows no fev... | Ascariasis of the biliary tract | general_qa | 170 |
The following is a multiple choice question (with answers).
===Question
Benzene $\left( l \right) \rightleftharpoons$ Benzene $(g)$ : ${ K }_{ p } = 60\ mm\ Hg$ at $300\ K$Toluene $\left( l \right) \rightleftharpoons$ Toluene $(l)$ : ${ K }_{ p } = 40\ mm\ Hg$ at $300\ K$The mole fraction of benzene in vapors of benzen... | 0.5 | general_qa | 215 |
The following is a multiple choice question (with answers).
===Question
A particle is moving along the $x$ axis whose position is given by $x=4-9t+\dfrac { { t }^{ 3 } }{ 3 }$. Mark the correct statement(s) in relation to its motion.
===Choices
For $3\ <\ t < 6\ s$, the particle is slowing down
For $0\ <\ t < 3\ s$, t... | For $0\ <\ t < 3\ s$, the particle is slowing down | general_qa | 221 |
The following is a multiple choice question (with answers).
===Question
What curvature must be given to the bounding surface of a refracting medium $(\mu =1.5)$ for the virtual image f an object in the adjacent medium $(\mu =1)$ at $10\ cm$, to be formed at a distance of $40\ cm $?
===Choices
11\ cm
18\ cm
20\ cm
$$8\... | $$12\ cm$$ | general_qa | 134 |
The following is a multiple choice question (with answers).
===Question
Stored in a spherical steel tank with a volume of $3.0 \times 10^{-2} \mathrm{m}^{3}$ is 0.5 kg of methane (CH₄). If the methane's temperature rises from 25°C to 33°C, use the R-K equation to calculate the change in pressure.
===Choices
$$
0. 3 4 ... | $$
0. 0 7 1 \mathrm{~ M P a}
$$ | general_qa | 288 |
The following is a multiple choice question (with answers).
===Question
Two particles, each with a rest mass of $m$, are moving in the same direction with momenta of $5 m c$ and $10 m c$ respectively. What is the speed of the faster particle as observed from the slower one? And vice versa?
===Choices
0.571c
-0.571c
0.... | 0.593c
-0.593c | general_qa | 221 |
The following is a multiple choice question (with answers).
===Question
Mr. Hu found that after inoculating colon cancer cells into mice, the cancer cells could form transplant tumors in the mice. By increasing the expression of surface molecules on tumor cells to stimulate T cell proliferation, the transplant tumors c... | B7 | general_qa | 125 |
The following is a multiple choice question (with answers).
===Question
Higher education in China can be divided into 13 categories, such as engineering, agriculture, forestry, medicine, teacher training, finance and law, and so on.What does this refer to?
===Choices
The segmentation of professional training
Formal st... | Subject structure of higher education | general_qa | 117 |
The following is a multiple choice question (with answers).
===Question
If investment temporarily increases by 150 billion yuan, and the marginal propensity to consume is 0.8, then the level of income will increase ( )
===Choices
750 billion yuan and then stabilize at a lower level
750 billion yuan and then return to ... | 750 billion yuan and remain at this level | general_qa | 170 |
The following is a multiple choice question (with answers).
===Question
Given $L$ as the part of the ellipse $frac{{{x}^{2}}}{{{a}^{2}}}+frac{{{y}^{2}}}{{{b}^{2}}}=1$ in the first quadrant, the value of the line integral $int_{L}{xydl}$ is ( ).
===Choices
$frac{a^2b^2({a^2}+ab+{b^2})}{3(a+b)}$
$0$
$frac{{{a}^{2}}+ab+{... | $frac{ab({{a}^{2}}+ab+{{b}^{2}})}{3(a+b)}$ | general_qa | 338 |
The following is a multiple choice question (with answers).
===Question
What are the meanings of the publicness of public management includes?
===Choices
The Public Nature of Value Orientation and Social Ethics
The public nature of interest orientation and the public nature of management participation
The publicness o... | The public nature of interest orientation and the public nature of management participation | general_qa | 166 |
The following is a multiple choice question (with answers).
===Question
In a certain population, the proportion of people who can roll their tongues is 64%. Tongue rolling is determined by alleles. What is the probability of having a tongue-rolling child from the marriage between a tongue roller and a non-tongue roller... | 5/8 | general_qa | 110 |
The following is a multiple choice question (with answers).
===Question
What were the month and year when Barcelona was announced as the UNESCO-UIA World Capital of Architecture for the 2024-2026 term?
===Choices
January 2024
July 2023
September 2023
October 2023
April 2023
March 2023
June 2023
November 2023
May 2023
... | July 2023 | general_qa | 120 |
The following is a multiple choice question (with answers).
===Question
A circular wire loop of radius R is placed in the x-y plane centred at the origin O. A square loop of side a(a << R) having two turns is placed with its centre at $z = \sqrt{3}R$ along the axis of the circular wire loop, as shown in figure. The pla... | 7 | general_qa | 246 |
The following is a multiple choice question (with answers).
===Question
What is palace yan music?
===Choices
Addresses directly the melodies utilized in royal engagements. The sovereign engagement music of the Liao dynasty was filled with several bands and two squads of dancers.
Pertains mostly to the music utilized b... | Refers specifically to the music used by the ruler when hosting guests. The court banquet music of the Tang dynasty was composed of multiple orchestras and two troupes of performers. | general_qa | 379 |
The following is a multiple choice question (with answers).
===Question
Two moles of ideal helium gas are in a rubber balloon at $30^o$C. The balloon is fully expandable and can be assumed to require no energy in its expansion. The temperature of the gas in the balloon is slowly changed to $35^o$C. The amount of heat r... | $208$ J | general_qa | 150 |
The following is a multiple choice question (with answers).
===Question
On a certain day, a bank quotes USD/JPY: 103.4/103.7 and GBP/USD: 1.3040/1.3050. If a company needs to pay in yen using pounds, what is the arbitrage price for the company to buy yen with pounds?
===Choices
79.2337/79.5245
128.8336/129.3285
134.93... | 134.8336/135.3285 | general_qa | 262 |
The following is a multiple choice question (with answers).
===Question
Calculate the mass of water vapour present in a room of volume $400 \mathrm{m}^3$ that contains air at $27^{\circ} \mathrm{C}$ on a day when the relative humidity is 60 per cent.
===Choices
4.5 kg
6.2$\text{kg}$
12.4 kg
3.9 kg
9.8 kg
5.6$\text{kg}... | 6.2$\text{kg}$ | general_qa | 140 |
The following is a multiple choice question (with answers).
===Question
What is the treatment for patients with symptoms of "dizziness and headache, chest tightness, nausea and vomiting, greasy white tongue coating, and stringy and slippery pulse"?
===Choices
Xuefu Zhuyu Jiedu Jiaonang
Baixia Baizhu Jiaogulan Tang
Bai... | Baixia Baizhu Tianma Tang | general_qa | 164 |
The following is a multiple choice question (with answers).
===Question
Determine the heat transfer coefficient of a casing-type toluene cooler, with the experimental data obtained as follows: the heat transfer area of the cooler is $2.8{m}^{2}$, toluene flow rate is 2000 kg/h, cooling from 80°C to 40°C. The cooling wa... | $$
4 3 6. 3 \mathrm{W / m^{2} \cdot °C}
$$ | general_qa | 382 |
The following is a multiple choice question (with answers).
===Question
Solve the integral:
$$
-\int \frac{ 1 }{ \cos(x)^3 \cdot \sin(x)^2 } \, dx
$$
===Choices
C + \frac{\sin(x)}{2\cdot\left(\left(\sin(x)\right)^2-1\right)} + \frac{3}{4}\cdot\ln\left(\left|\sin(x)-1\right|\right) - \frac{1}{\sin(x)} - \frac{3}{4}\cdo... | C + \frac{\sin(x)}{2\cdot\left(\left(\sin(x)\right)^2-1\right)} + \frac{3}{4}\cdot\ln\left(\left|\sin(x)-1\right|\right) + \frac{1}{\sin(x)} - \frac{3}{4}\cdot\ln\left(\left|1+\sin(x)\right|\right) | general_qa | 671 |
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