problem stringlengths 14 4.09k | solution stringlengths 1 802k | task_type stringclasses 3
values | problem_tokens int64 5 895 |
|---|---|---|---|
The following is a multiple choice question (with answers).
===Question
A cable with a double-layer dielectric insulation structure has capacitance and resistance for the first layer (inner layer) and second layer (outer layer) as follows: $C_{1} \!=\! 4000 \mathrm{pF}, \ R_{1} \!=\! 1500 \mathrm{M} \Omega; \ \ C_{2} \... | $$
2 0~\mathrm{\mu A},\ 1.2\times10^{-4}\mathrm{C},\ 6\times10^{-5}\mathrm{C}
$$ | general_qa | 646 |
The following is a multiple choice question (with answers).
===Question
In YDSE, maximum for two wavelengths $\lambda_1$ & \Lambda_2$ belonging to visible reagion ( $380 nm- 740nm$), is formed at angular position $\left( \frac{1}{40}\right)$ radian on the screen. If the slit seperation is $d= 10^{-4}m$, then find $\lam... | $$500 nm, 625 nm$$ | general_qa | 230 |
The following is a multiple choice question (with answers).
===Question
A skier weighing $90 \mathrm{~kg}$ starts from rest down a hill inclined at $17^{\circ}$. He skis $100 \mathrm{~m}$ down the hill and then coasts for $70 \mathrm{~m}$ along level snow until he stops. Find the coefficient of kinetic friction between... | 0.18 | general_qa | 146 |
The following is a multiple choice question (with answers).
===Question
Which of the following reasoning is valid?
===Choices
If I am in Paris, I am in France. I am in France, so I must be in Paris.
If I lent you this book, then you have the book. You don't have the book, so I didn't lend you the book.
If I am a paint... | If all men die, Socrates is a man, so Socrates will die. | general_qa | 201 |
The following is a multiple choice question (with answers).
===Question
$5.1g \space NH_4SH$ is introduced in 3.0 L evacuated flask at $327^{0}C$, 30% of the solid $NH_4SH$ decomposed to $NH_3$ and $H_2S as gases. The $K_p$ of the reaction at $327^{0}C$ is ($ R = 0.082 \space L \space atm \space mol^{-1}K^{-1}$, Molar ... | $$4.9 \times 10^{-3} \space atm^{2}$$ | general_qa | 375 |
The following is a multiple choice question (with answers).
===Question
A lumber mill contracted to deliver one thousand8-foot sheets of plywood to a home improvement store on the first of each month for 10 consecutive months starting June 1. The June, July, and August shipments were delivered on time and duly paid for... | Judgment for the store, because the mill's duties of performance would not be excused. | general_qa | 344 |
The following is a multiple choice question (with answers).
===Question
We now define an algorithm: The definition of a(n) is the "class-" (or "class-minus") number of prime(n) according to the Erdős-Selfridge classification of primes, which classifies primes based on certain properties related to their factorization a... | [3, 3, 2, 3, 2, 2, 5, 3, 3, 2] | general_qa | 439 |
The following is a multiple choice question (with answers).
===Question
Extended spectrum beta lactamases (ESBLs) are characterized by activity against all except.
===Choices
Tetracyclines
Aminopenicillins
Fluoroquinolones
Carbapenems
Aminoglycosides
Monobactams
Oxyimino-cephalosporinases
Cephalosporinases
Penicillina... | Carbapenems | general_qa | 98 |
The following is a multiple choice question (with answers).
===Question
Science tries to explain nature with the logic and imagination of human thinking, and when there is a contradiction between human thinking and nature, human beings will change their thinking to adapt to nature. What is science based on?
===Choices... | The logic and imagination of the human mind. | general_qa | 142 |
The following is a multiple choice question (with answers).
===Question
In hydroacoustics, which two methods are commonly used to study the propagation of underwater acoustic signals?
===Choices
Wave Exploration, Ray Exploration
Frequency Method, Echo Analysis
Wave Analysis, Beam Analysis
Wave Experiment, Light Theory... | Wave Theory, Ray Theory | general_qa | 99 |
The following is a multiple choice question (with answers).
===Question
A subset H of a group (G,*) is a group if
===Choices
a,b in H=> a * b in H
a,b in H=> a - b^-1 in H
a,b in H => a + b in H
a,b in H => a / b in H
a in H => a * a^-1 in H
a in H => a^-1 in H
a,b in H=> a * b^-1 in H
H contains the identity element
... | a,b in H=> a * b^-1 in H | general_qa | 134 |
The following is a multiple choice question (with answers).
===Question
The social structure is made up of a series of positions arranged in high and low ranks, and what is each position called?
===Choices
Social order
Group standing
Social class
Social level
Social status
Member function
Community role
Social rank
So... | Social status | general_qa | 71 |
The following is a multiple choice question (with answers).
===Question
Air at pressure $p_{1}=0.3 \text{MPa}$ and temperature $t_{1}=24^{\circ} \text{C}$ is injected through a nozzle into a space with a pressure of 0.157 MPa. What type of nozzle should be used? If the air mass flow rate is $q_{m}=4 \text{kg/s}$, what ... | $$
57.43 \times1 0^{-4} {\mathrm{m}}^{2}
$$ | general_qa | 362 |
The following is a multiple choice question (with answers).
===Question
What must be the premise for teachers to guide children's games?
===Choices
Diversify your games
Keep the game purposeful
Promote competition among children
Minimize physical activity in games
Ensure the characteristics of children's games
Develop... | Ensure the characteristics of children's games | general_qa | 93 |
The following is a multiple choice question (with answers).
===Question
The principle of amino acid paper chromatography is based on differences in ___.
===Choices
Distribution coefficient of mixed amino acids in two immiscible solvents
Separation rate of mixed amino acids in dual phases
Binding affinity of amino acid... | Distribution coefficient of mixed amino acids in two immiscible solvents | general_qa | 145 |
The following is a multiple choice question (with answers).
===Question
Add heavy water with a total radioactivity of 200 curies to an underground well. Three years later, take water samples from this area and measure using a gas-filled counting tube; the radioactivity is 10 pulses per minute higher than the background... | 80,000 tons | general_qa | 221 |
The following is a multiple choice question (with answers).
===Question
In individual assessments of health risk factors, what does it indicate if the assessed age is higher than the actual age?
===Choices
The risks associated with the evaluated individual are higher than the average level.
The evaluated individual sh... | The risks associated with the evaluated individual are higher than the average level. | general_qa | 159 |
The following is a multiple choice question (with answers).
===Question
Cell equation : $A + 2B^{+}\rightarrow A^{2+} + 2B$
$$A^{2+} + 2e \rightarrow A\ E^{\circ} = +0.34\ V$$
and $\log_{10} K = 15.6$ at $300\ K$ for cell reactions
Find $E^{\circ}$ for $B^{+} + e\rightarrow B$
Given $\left [\dfrac {2.303\ RT}{nF} = 0.0... | $$0.80$$ | general_qa | 213 |
The following is a multiple choice question (with answers).
===Question
A solution contains a mixture of $\displaystyle Na_{2}CO_{3}$ and $NaOH$. Using phenolpthalein as indicator, $25$ mL of mixture required $19.5$ mL of $0.995\ N\ HCl$ for the end point. With methyl orange, $25$ mL of the solution required $25$ mL of... | $Na_{2}CO_{3}=23.2$ g/L, $NaOH= 22.3$ g/L | general_qa | 375 |
The following is a multiple choice question (with answers).
===Question
Which of the following is the earliest X-ray manifestation of pulmonary congestion?
===Choices
Duplication in the inferior lobular vein mimics loops.
Distension of the anterior lung segment forms webbings.
Convergence in the subpleural lymphatics ... | the upper lobe pulmonary vein resembles a stag's antlers | general_qa | 150 |
The following is a multiple choice question (with answers).
===Question
Which university did Qasim Amin participate in founding?
===Choices
University of Cairo and Alexandria
Cairo University
University of Cairo and Egypt
Al-Azhar University
University of Al-Azhar
University of Cairo and Al-Azhar
University of Cairo
U... | Cairo University | general_qa | 89 |
The following is a multiple choice question (with answers).
===Question
Evaluate
$$$\sum^{44}_{n=0} \frac{sin (4n + 1)}{\cos (2n) \cos (2n + 1)}+ \sum^{90}_{n=46} \frac{\sin (4n - 1)}{\cos (2n -1) \cos (2n)}.$$$
===Choices
-4
-1
1
4
2
-3
0
3
-2
1/2 | 0 | general_qa | 121 |
The following is a multiple choice question (with answers).
===Question
Female, 43 years old, has suffered from hyperthyroidism for 3 years and needs partial thyroidectomy. What is the correct preoperative preparation?
===Choices
Administer methimazole + low-dose iodine three weeks prior to surgery
Provide methimazole... | Give propylthiouracil + high-dose iodine two weeks before surgery | general_qa | 225 |
The following is a multiple choice question (with answers).
===Question
Two rods of length $ L_1$ and $L_2 $ are made of material whose coefficient of linear expansion are $ \alpha_1$ and $\alpha_2 $ if the difference between the two lengths is independent of temperature
===Choices
$$( L_1 / L_2 ) = ( \alpha_2 / \alp... | $$( L_1 / L_2 ) = ( \alpha_2 / \alpha_1 )$$ | general_qa | 295 |
The following is a multiple choice question (with answers).
===Question
What opportunity did Cab Calloway refuse while at Crane College?
===Choices
Joining the track team.
Joining the wrestling team.
Joining the band.
Joining the debate team.
Joining the chess club.
Playing basketball.
Joining the glee club.
Joining t... | Playing basketball. | general_qa | 87 |
The following is a multiple choice question (with answers).
===Question
Find all real solutions of the following equation:
$$
\frac{ x }{ 2 x+6 }-\frac{ 2 }{ 5 x+5 }=\frac{ 5 x^2-3 x-7 }{ 10 x^2+40 x+30 }
$$
===Choices
x=7/5
x=3/2
x=1/4
x=3/5
x=1/2
x=1/3
x=7/8
x=5/4
x=3/4
x=7/4 | x=5/4 | general_qa | 143 |
The following is a multiple choice question (with answers).
===Question
Let $\mathcal{F}$ be a collection of eight-element subsets of $S = \{1, 2, \dots, 24\}$ such that any five-element subset of $S$ is contained in a unique element of $\mathcal{F}$ . Let $N$ be the number of unordered pairs $\{A, B\}$ such that $A, B... | 385 | general_qa | 173 |
The following is a multiple choice question (with answers).
===Question
A block of mass $2.5\ kg$ is kept on a rough horizontal surface. It is found that the block does not slide if a horizontal force less than $15\ N$ is applied to it. Also it is found that it takes $5\ s$ to slide throughout the first $10\ m$ if a ho... | $${ \mu }_{ k }=0.60$$ | general_qa | 275 |
The following is a multiple choice question (with answers).
===Question
After conducting a five forces analysis of a home appliance manufacturing company, consultants found: core key components of the company's products are controlled by a small number of foreign suppliers; there is overcapacity in home appliance produ... | I,Ⅳ and Ⅴ | general_qa | 216 |
The following is a multiple choice question (with answers).
===Question
A certain element emits 1 alpha particle, and its products then emit 2 beta particles in succession. The atomic number of the resulting element is changed by
===Choices
minus 2
plus 2
plus 4
zero
minus 1
plus 3
minus 4
minus 3
plus 1
does not chan... | zero | general_qa | 86 |
The following is a multiple choice question (with answers).
===Question
Which of the following statements about snake skulls is correct?
===Choices
The skull retains a fully developed temporal fossa.
The skull lacks a temporal fossa.
The left and right halves of the mandible have not fused.
The infra-temporal arch com... | The skull lacks a temporal fossa. | general_qa | 166 |
The following is a multiple choice question (with answers).
===Question
$\int_{{}}^{{}}{\frac{1+\sin x}{1+\cos x}dx}=$
===Choices
$\tan \frac{x}{2}+\ln (1-\cos \frac{x}{2})+C$
$\tan rac{x}{2}-\ln (1+\cos rac{x}{2})+C$
$\tan \frac{x}{2}+\ln (1-\cos x)+C$
$\tan \frac{x}{2}-\ln (1-\cos x)+C$
$\tan \frac{x}{2}-\ln (1+\c... | $\tan \frac{x}{2}-\ln (1+\cos x)+C$ | general_qa | 247 |
The following is a multiple choice question (with answers).
===Question
Adult subarachnoid space terminates in ().
===Choices
The level of the 5th lumbar vertebra to the 1st sacral vertebra
The space up to the 2nd cervical vertebra
The space between the 3rd sacral and 4th sacral vert
Level of the 2nd sacral vertebra
T... | Level of the 2nd sacral vertebra | general_qa | 164 |
The following is a multiple choice question (with answers).
===Question
Molar conductivity of $0.1 M\ HBr $ at certain temperature is $256.62\ S\ cm^2 mol^{-1}$. What is its $pH$? [$\lambda^0_{H^+}= 349.6 S cm^2 mol^{-1}, \lambda^0_{Br^-}= 78.1\ S\ cm^2 mol^{-1}$]
===Choices
$$4.35$$
$$3.95$$
$$4.15$$
$$2.5$$
$$3.65$$... | $$4.2$$ | general_qa | 178 |
The following is a multiple choice question (with answers).
===Question
Construct a complete truth table for the following argument. Then, using the truth table, determine whether the argument is valid or invalid. If the argument is invalid, choose an option which presents a counterexample. (There may be other countere... | Invalid. Counterexample when P, R, and Q are true | general_qa | 215 |
The following is a multiple choice question (with answers).
===Question
Which deadly gas leaked during the 1943 Bari air raid, causing massive casualties among military personnel and civilians?
===Choices
Mustard gas
Phosgene
Phosgene mustard
Chlorine mustard
Chloropicrin
Chlorine gas
Sarin gas
Hydrogen cyanide
Lewisi... | Mustard gas | general_qa | 88 |
The following is a multiple choice question (with answers).
===Question
For each arrangement of the ten numbers $1,4,7,10,13,16,19,22,25,28$ around the circle, let $N$ denote the largest of the ten sums obtained by adding each number to the sum of its neighbors. What is the smallest value of $N$ that can be obtained?
... | 48 | general_qa | 126 |
The following is a multiple choice question (with answers).
===Question
Let $E \subset \mathbf{R}$ be a measurable set with $m(E) < +\infty$, and let $g(x)$ be bounded and measurable on $E$. Define $a = \operatorname*{inf} \left( g(x) : x \in E \right)$ and $b = \operatorname*{sup} \left( g(x) : x \in E \right)$, where... | $$
h ( b ) \cdot m ( E )-\! \! \int_{a}^{b} \! \! h^{\prime} ( t ) \cdot m ( g^{-1} ( \left[ a, t \right] ) ) \mathrm{d} t
$$ | general_qa | 832 |
The following is a multiple choice question (with answers).
===Question
Conduct a breakwater model experiment using a model with a length scale $\lambda_{l}=40$. If the measured wave pressure on the model is $F_{\mathrm{m}}=$ 130N, calculate the wave pressure $F_{\mathrm{p}}$ acting on the prototype breakwater is ().
... | 8320N | general_qa | 146 |
The following is a multiple choice question (with answers).
===Question
After using the symmetrical component transformation method, only which kind of electromotive force is there?
===Choices
Reverse Sequence
Backward Sequence
Single Sequence
Positive Sequence
Direct Sequence
Negative Sequence
Zero Sequence
Initial S... | Forward Sequence | general_qa | 66 |
The following is a multiple choice question (with answers).
===Question
A 72-year-old male. He suddenly fell while defecating, lost consciousness, and had intermittent breathing. He has a history of old myocardial infarction and diabetes, but no history of hypertension. He was diagnosed with cardiac arrest. Previous ec... | Coronary heart disease | general_qa | 157 |
The following is a multiple choice question (with answers).
===Question
At 298 K, the standard state chemical potential of $Hg_2 Cl_2(s)$ is $-210.66 kJ \cdot mol^{-1}$. Given that the concentration of $Cl^-$ in aqueous solution is $0.1 mol \cdot kg^{-1} (\gamma_{\pm} = 0.778)$, and its chemical potential is $-137.50 k... | 0.2678V | general_qa | 235 |
The following is a multiple choice question (with answers).
===Question
1 ml of 7.5% sodium bicarbonate provides:-
===Choices
0.9 meq bicarbonate
0.88 meq bicarbonate
0.87 meq bicarbonate
0.85 meq bicarbonate
1.5 meq bicarbonate
0.5 meq bicarbonate
0.7 meq bicarbonate
0.8 meq bicarbonate
1.1 meq bicarbonate
1.0 meq bi... | 0.9 meq bicarbonate | general_qa | 113 |
The following is a multiple choice question (with answers).
===Question
The mass fractions of carbon (C), hydrogen (H), and oxygen (O) in domestically produced gasoline in China are 0.855, 0.145, and 0, respectively. Calculate the stoichiometric air-fuel ratio of the gasoline.
===Choices
14.896
1.299
1.480
14.177
15.3... | 14.796 | general_qa | 141 |
The following is a multiple choice question (with answers).
===Question
Given that the trajectory of a particle under the influence of a central force is a spiral $r = k \theta^{2},$ where $k$ is a constant.What is the expression for the central force $F(r)$ ?
===Choices
$F=-mh^2\left(\frac{7k}{r^5}+\frac2{r^6}\right)... | $F=-mh^2\left(\frac{6k}{r^4}+\frac1{r^3}\right).$ | general_qa | 350 |
The following is a multiple choice question (with answers).
===Question
The frequency-modulated current output of a sensor is $\boldsymbol{i}=I_{m} \mathbf{s i n} \left( \omega_{\epsilon} t+K \, \mathbf{c o s} \, \omega_{m} t \right)$. If this current passes through an inductor $L$, determine the modulation depth is ()... | $$
K \omega_{M} / \omega_\epsilon
$$ | general_qa | 233 |
The following is a multiple choice question (with answers).
===Question
The molar volume of liquid benzene ($density=0.877 g ml^{-1}$) increases by a factor of $2750$ as it vaporizes at $20^{\circ}$C and that of liquid toluene ($density=0.867 g ml^{-1}$)increases by a factor of $7720$ at $20^{\circ}$C. A solution of... | $$0.62$$ | general_qa | 209 |
The following is a multiple choice question (with answers).
===Question
When did the treatment of high platform palaces in China begin?
===Choices
Five Dynasties and Ten Kingdoms Period
Three Kingdoms Period
Ming Dynasty
Tang Dynasty
Spring and Autumn and Warring States
Han Dynasty
Yuan Dynasty
Sui Dynasty
Qing Dynast... | Spring and Autumn and Warring States | general_qa | 78 |
The following is a multiple choice question (with answers).
===Question
What is the first and last name of the first female television meteorologist in the U.S.?
===Choices
June Bercey-Berry
Janice Berry-Bercey
June Bacon-Bercey
Janice Berry-Berry
Janice Bacon-Bercey
Janice Bercey-Berry
Janice Bacon-Berry
Janice Berce... | June Bacon-Bercey | general_qa | 104 |
The following is a multiple choice question (with answers).
===Question
The transfer function of a certain active filter circuit is given by
$$
A(s) = \frac{V_{\circ}(s)}{V_{\text{in}}(s)} = \frac{-s^{2}}{s^{2} + \frac{3}{R_{1} \, C} \, s + \frac{1}{R_{1} \, R_{2} \, C^{2}}}
$$
Find the passband gain $A_{0}$, the chara... | $$
-1
$$
$$
\frac{1}{C\sqrt{R_1R_2}}
$$
$$
\frac{1} {3} \sqrt{\frac{R_{1}} {R_{2}}}
$$ | general_qa | 675 |
The following is a multiple choice question (with answers).
===Question
Let the even function f(x) have continuous second derivatives, and f''(0) ≠ 0, then x = 0 ( ).
===Choices
It must be a periodic point of f(x)
Could possibly be the inflection point of f(x)
It must be the extremum point of f(x)
It often is the mini... | It must be the extremum point of f(x) | general_qa | 158 |
The following is a multiple choice question (with answers).
===Question
Eight boxes are numbered $A$ to $H$ . The number of ways you can put $16$ identical balls into the boxes such that none of them is empty is expressed as $\binom {a}{b}$ , where $b \le \frac{a}{2}$ . What is the remainder when $\binom {a}{b}$ is div... | 11 | general_qa | 127 |
The following is a multiple choice question (with answers).
===Question
The average molecular weight of air is known to be $\mu_{\mathrm{air}}=29$, and the mass of the hydrogen balloon shell can be neglected. To make a hydrogen balloon with a lifting force of $F_{\mathrm{up}}=2000 \ \mathrm{N}$ under standard atmospher... | $1.46 \times 10^{7} \mathrm{s}$ | general_qa | 310 |
The following is a multiple choice question (with answers).
===Question
The given system's state equation is
$$
\dot{\mathbf{x}}=\mathbf{A} \mathbf{x}+\mathbf{B} u
$$
where,
$$
\mathbf{A}=\left[ \begin{array} {c r} {{{0}}} & {{{1}}} \\ {{{0}}} & {{{-1}}} \\ \end{array} \right], \qquad\mathbf{B}=\left[ \begin{array} {c}... | $$
- x_{1}-x_{2}
$$ | general_qa | 359 |
The following is a multiple choice question (with answers).
===Question
In hydrogen atom, an electron makes transition from $n=3$ to $n=2$ state in time interval of $1.2\times{10}^{-8}s$. Calculate the average torque (in Nm) acting on the electron during this transition.
===Choices
$$4.40\times{10}^{-27}$$
4.10 \times... | $$1.055\times{10}^{-26}$$ | general_qa | 230 |
The following is a multiple choice question (with answers).
===Question
Based on the effectiveness of interpretation, criminal law interpretations can be categorized into ().
===Choices
A fortiori interpretation, literal interpretation, and logical interpretation
Conventional interpretation, analytical interpretation,... | Legislative interpretation, judicial interpretation, and doctrinal interpretation | general_qa | 150 |
The following is a multiple choice question (with answers).
===Question
To prepare Buffer 31, a 0.2 M pH 5.00 acetate buffer solution, how much solid sodium acetate (trihydrate, molecular weight 136) and 1 M acetic acid solution are required?
===Choices
60.5g,180ml
49.1g,240ml
47.6g,250ml
58.9g,230ml
53.2g,215ml
62.7g... | 51.4g,222ml | general_qa | 181 |
The following is a multiple choice question (with answers).
===Question
The degree of dissociation $\alpha$ of the reaction $N_2O_4(g) \rightleftharpoons 2NO_2 (g) O $ can be related to $K_p$ as
===Choices
$$\alpha = \frac{\frac{K_p}{2P}}{3 + \frac{K_p}{2P}}$$
$$\alpha = \frac{\frac{K_p}{2P}}{4 + \frac{K_p}{2P}}$$
$$... | $$\alpha =\Bigg[ \frac{K_p}{4 + K_p} \Bigg]^{1/2}$$ | general_qa | 327 |
The following is a multiple choice question (with answers).
===Question
In the 2006 revised version of the Hong Kong 'Prevention of Cruelty to Animals Ordinance', how many years of imprisonment can be imposed for animal abuse if convicted under summary procedure?
===Choices
4
5
3.5
2.75
2.5
1
3
3.25
6
2 | 3 | general_qa | 88 |
The following is a multiple choice question (with answers).
===Question
Let the random variable $X \sim U(0, \pi)$, $Y = \sin X$. Use the characteristic function to find $f_{Y}(y)$ is ().
===Choices
$$
f_{Y} ( y )=\frac{1} {\pi} \cdot\frac{2} {\sqrt{1-y^{2}}}, \quad0 < y < 1
$$
$$
f_{Y} ( y )=\frac{2} {\pi} \cdot\frac... | $$
f_{Y} ( y )=\frac{2} {\pi} \cdot\frac{1} {\sqrt{1-y^{2}}}, \quad0 < y < 1
$$ | general_qa | 494 |
The following is a multiple choice question (with answers).
===Question
The decrease in the ratio of red blood cell surface area to volume can cause red blood cells ( ).
===Choices
Deformation enhancement
Improved oxygen transport efficiency
Increased hemoglobin content
Enhanced adhesive properties
Increased permeabil... | Increased permeability brittleness | general_qa | 98 |
The following is a multiple choice question (with answers).
===Question
When the foundation of a gravity dam is excavated on the upstream slope, the anti-sliding stability of the dam body will be ( ) affected.
===Choices
Indestructive
Insufficient
Ineffective
Unchanged
Inferior
Disadvantage
Not necessarily
Advantageou... | Advantageous | general_qa | 81 |
The following is a multiple choice question (with answers).
===Question
Let $x_1, x_2, ..., x_n$ ($n > 2$) be a sample from population X, and let $E(X) = \mu$ (where $\mu$ is unknown), with x represents the sample mean.The unbiased estimate of $\mu$ is $\ ( \qquad\mathrm{~ ) ~}$.
===Choices
$n{\bar x}$
${\bar x}/(n-1)... | ${\bar x}$ | general_qa | 211 |
The following is a multiple choice question (with answers).
===Question
Do $\mathrm{HF} / 6-31 \mathrm{G}^*$ geometry optimizations on one conformers of $\mathrm{HCOOH}$ with $\mathrm{OCOH}$ dihedral angle of $0^{\circ}$. Calculate the dipole moment.
===Choices
0.85 $\mathrm{D}$
1.41 $\mathrm{D}$
1.89 $\mathrm{D}$
3.0... | 1.41 $\mathrm{D}$ | general_qa | 150 |
The following is a multiple choice question (with answers).
===Question
Which of the two important material exchange zones between the atmosphere is the high front zone?
===Choices
Exosphere, thermosphere
Exosphere, mesosphere
Stratosphere, exosphere
Ionosphere, mesosphere
Mesosphere, thermosphere
Thermosphere, tropos... | Troposphere, stratosphere | general_qa | 99 |
The following is a multiple choice question (with answers).
===Question
What determines the average filling pressure of systemic circulation?
===Choices
The relative relationship between blood volume and circulatory system capacity
The relationship between heart rate and stroke volume during exercise
The relative rela... | The relative relationship between blood volume and circulatory system capacity | general_qa | 147 |
The following is a multiple choice question (with answers).
===Question
If you use Kjeldahl method to determinate the nitrogen content of an organic substance, weigh 1.000g of the sample, absorb ammonia with 50.00mL 0.4000mol/L HCl, excess HCl is titrated back with 0.2000mol/L NaOH standard solution, and 10.00mL NaOH i... | 25.22% | general_qa | 193 |
The following is a multiple choice question (with answers).
===Question
For a certain type of hydrogen ion, the first line of the Lyman series is composed of two lines with a wavenumber difference of $228.40 \, \mathrm{cm}^{-1}$. What kind of hydrogen ion is it?
===Choices
5.00; is a doubly excited oxygen ion.
5.00; i... | 5.00; is a quadruply ionized boron ion. | general_qa | 207 |
The following is a multiple choice question (with answers).
===Question
You have a sample of gas at -33 °C. You wish to in-crease the rms speed by 10.0%. To what temperature should the gas be heated?
===Choices
85°C
70°C
60°C
45°C
40°C
50°C
65°C
55°C
80°C
75°C | 50°C | general_qa | 94 |
The following is a multiple choice question (with answers).
===Question
For a certain mass of ideal gas, the impossible process is ____
===Choices
Isoenthalpic
Isoentropic
Isochoric
Cannot be determined
Isobaric
Adiabatic
Isochoric and Isothermal
Isochoric and Adiabatic
Isochoric and Isobaric
Isothermal | Isothermal | general_qa | 82 |
The following is a multiple choice question (with answers).
===Question
A patient with history of running nose and pain over medial aspect of the eye presents with sudden onset of high grade fever, prostration, chemosis, proptosis and diplopia on lateral gaze with congestion of the optic disc. Which of the following is... | Cavernous sinus thrombosis | general_qa | 157 |
The following is a multiple choice question (with answers).
===Question
What phenomenon occurs when lime is dissolved?
===Choices
Rapid hardening
Mass decrement
Rapid coagulation
Temperature reduction
Color change
Volume contraction
Volume expansion
Volume stabilization | Volume expansion | general_qa | 53 |
The following is a multiple choice question (with answers).
===Question
Which of the following infectious factors may cause rheumatoid arthritis by activating B lymphocytes?
===Choices
Salmon
Staphylococcus aureus
Mycoplasma
Escherichia coli
Klebsiella pneumoniae
EB virus
Candida albicans
streptococcus
Pseudomonas aer... | EB virus | general_qa | 95 |
The following is a multiple choice question (with answers).
===Question
What type of animal larvae are planktonic larvae?
===Choices
Hydrozoans
Sponges
Nematodes
Cnidarians
Annelids
Arthropods
Flatworms
Tunicates
Echinoderms
Mollusks | Cnidarians | general_qa | 70 |
The following is a multiple choice question (with answers).
===Question
Which of the following signs is most significant for diagnosing intestinal obstruction?
===Choices
Persistent abdominal constituent sounds
Gestational abdominal distention
Abdominal distension
Increased abdominal girth measurement
Bowel sounds and... | Bowel sounds and peristaltic waves | general_qa | 98 |
The following is a multiple choice question (with answers).
===Question
A small company makes widgets in a variety of constituent materials (aluminum, copper, iron), colors (red, green, blue, grey), and finishes (matte, textured,
coated). The box below shows a typical order form for the company's widgets.
| Order Form ... | True.True.True.True.True. | general_qa | 327 |
The following is a multiple choice question (with answers).
===Question
Assuming we add $w \left( \mathrm{Na_{2}O} \right) = 10\%$ of $\mathrm{Na}_{2}O$ to $\mathrm{SiO}_{2}$, please calculate the ratio of oxygen to silicon. If $O : \mathrm{Si} \leqslant 2.5$ is the criterion for vitrification tendency, what is the max... | 1/3 | general_qa | 164 |
The following is a multiple choice question (with answers).
===Question
An infinitely long thin-walled metal cylinder has a uniform current flowing along its axis, with a surface current density of \(j A/m^2\). What is the magnitude of the magnetic force per unit area on the cylinder wall?
===Choices
\(\dfrac{9\mu_{0}... | \(\dfrac{\mu_{0}j^{2}}{2}\) | general_qa | 251 |
The following is a multiple choice question (with answers).
===Question
What month and year did Jim and Tammy Bakker start an East Coast version of Praise the Lord under TBN's umbrella?
===Choices
June, 1973
August, 1973
March, 1973
May, 1973
April, 1973
May, 1975
May, 1972
May, 1971
July, 1973
May, 1974 | May, 1973 | general_qa | 123 |
The following is a multiple choice question (with answers).
===Question
A buggy of mass $100 kg$ is free to move on a frictionless horizontal track. Two men, each of mass $50 kg$, are standing on the buggy, which is initially stationary. The men jump off the buggy with velocity $=100m/s$ relative to the buggy. In one s... | $$7:6$$ | general_qa | 157 |
The following is a multiple choice question (with answers).
===Question
A liquid flow through a horizontal tube. The velocities of the liquid in the two sections, which have areas of cross section ${ A }_{ 1 }$ and ${ A }_{ 2 }$ are ${ v }_{ 1 }$ and ${ v }_{ 2 }$ respectively. The difference in the levels of the liqui... | The energy per unit mass of the liquid is the same in both section of the tube | general_qa | 327 |
The following is a multiple choice question (with answers).
===Question
Which of the following are the main factors affecting the level of the profit rate? (Choose the option that includes all the correct statements)
I. Surplus value rate
II. Saving of constant capital
III. Organic composition of capital
IV. Turnover s... | I, II, III, and IV | general_qa | 141 |
The following is a multiple choice question (with answers).
===Question
In which year was the portrait of Zheng Chenggong designated as a national treasure?
===Choices
2014
2015
2011
2008
2013
2012
2010
2016
2009
2007 | 2010 | general_qa | 83 |
The following is a multiple choice question (with answers).
===Question
The total length of the radio antenna on the train is $3 \mathrm{m}$, composed of three sections, each with a length of 1m. Their diameters are $d_{1}=1.5 \mathrm{cm}, \; \; d_{2}=1.0 \mathrm{cm}, \; \; d_{3}=0.5 \mathrm{cm}$, respectively. The tra... | $$
7. 5 4 2 5 \mathrm{N} \cdot\mathrm{m}
$$ | general_qa | 429 |
The following is a multiple choice question (with answers).
===Question
A separately excited DC motor has the following nameplate data: $\mathrm{P}_{\mathrm{N}}=13 \mathrm{kW}, \ \ \mathrm{U}_{\mathrm{N}}=220 \mathrm{V}, \ \ \mathrm{I}_{\mathrm{N}}=68.6 \mathrm{A}, \ \ \mathrm{n}_{\mathrm{N}}=1500 \mathrm{r}/\mathrm{mi... | 2.894Ω | general_qa | 268 |
The following is a multiple choice question (with answers).
===Question
What is the treatment principle during the febrile phase of Hemorrhagic Fever with Renal Syndrome?
===Choices
Antiviral
Control hypertension
Prevent DIC
Prevent infection
Prevent secondary infections
Reduce exudation
Prevent renal failure
Anti-sho... | Antiviral | general_qa | 81 |
The following is a multiple choice question (with answers).
===Question
A non-Newtonian power-law fluid is flowing in a tube which is heatedby steam condensing outside the tube. Calculate the outletbulk fluid temperature for laminar flow, given the followingdata. Rate of flow of fluid = 650lbm/hr Entering temperature o... | 135°F | general_qa | 267 |
The following is a multiple choice question (with answers).
===Question
We now define an algorithm: The definition of a(n) is the number of ways to write n as the sum of two squares, allowing permutations of the squares. Given the input x_list (a series of values): [98, 99, 100, 101, 102, 103, 104, 105, 106, 107], dete... | [1, 0, 2, 1, 0, 0, 1, 0, 1, 0] | general_qa | 417 |
The following is a multiple choice question (with answers).
===Question
The initial process of fascization of the Japanese media began with which event
===Choices
Battle of Nomonhan
Boshin War Inception
Tokyo Firebombing
Pearl Harbor Attack
Manchuria Incident
Sino-Japanese War Start
September 18th Incident
February 26... | September 18th Incident | general_qa | 91 |
The following is a multiple choice question (with answers).
===Question
A solid sphere moves at a terminal velocity of $20ms^{-1}$ in air at a place where $g = 9.8ms^{-2}$. The sphere is taken in agravity=free hall having air at the same pressure and pushed down at a speed of $20ms^{-1}$.
===Choices
Its initial accele... | It will eventually stop | general_qa | 191 |
The following is a multiple choice question (with answers).
===Question
The recombination rate between the two linked genes wz (waxy) and sh (shrunken) located on chromosome 9 of maize is 36%. What is the probability of at least one crossover occurring between these two genes in cells undergoing meiosis?
===Choices
0.... | 0.72 | general_qa | 119 |
The following is a multiple choice question (with answers).
===Question
In which year did Ryoshi Yamada win the Tokyo Anime Award for Screenplay?
===Choices
2001
2009
2008
2000
2004
2002
2007
2003
2006
2005 | 2002 | general_qa | 83 |
The following is a multiple choice question (with answers).
===Question
Let $N$ denote the number of permutations of the $15$ -character string $AAAABBBBBCCCCCC$ such that
$\bullet$ None of the first four letters is an $A$ . (1)
$\bullet$ None of the next five letters is a $B$ . (2)
$\bullet$ None of the last six lette... | 320 | general_qa | 154 |
The following is a multiple choice question (with answers).
===Question
In optical systems, what is Abbe (Abbe) theory primarily used to describe?
===Choices
Nonlinear Optics in Crystals
Rayleigh Scattering Phenomenon
Chromatic Aberration of Lenses
Diffraction Limit of Light
Light Scattering in Media
Polarization Effe... | Diffraction Limit of Light | general_qa | 107 |
The following is a multiple choice question (with answers).
===Question
When D is the fundamental frequency, what interval is formed by the third and fourth harmonics?
===Choices
Major third
Perfect fourth
Perfect fifth
Minor third | Perfect fourth | general_qa | 47 |
The following is a multiple choice question (with answers).
===Question
What is the balanced half-reaction for the oxidation of acetate at pH=8?
===Choices
$$
1 / 6 \ {\mathrm{ H C O_{3}}^{-}+9 / 8 ~ H^{+}+e^{-}=1 / 8 ~ a c e t a t e^{-}+1 / 2 ~ H_{2} O}
$$
$$
\mathrm{p e}^{\circ}=3. 2 2
$$
$$
1 / 6 \ {\mathrm{ S O_{4... | $$
1 / 6 \ {\mathrm{ H C O_{3}}^{-}+9 / 8 ~ H^{+}+e^{-}=1 / 8 ~ a c e t a t e^{-}+1 / 2 ~ H_{2} O}
$$
$$
\mathrm{p e}^{\circ}=3. 2 2
$$ | general_qa | 855 |
The following is a multiple choice question (with answers).
===Question
An organic compound $(X)$ with molecular formula $C_{3}H_{7}NO$ reacts with bromine and caustic soda to give another compound $(Y)$. It reacts with $HNO_{2}$ to form alcohol and nitrogen gas. Compound $(X)$ and $(Y)$ respectively are
===Choices
$$... | $$X = CH_{3}CONHCH_{3}; Y = CH_{3}CH_{2}OH$$ | general_qa | 364 |
The following is a multiple choice question (with answers).
===Question
Which anthropological theory emphasizes the role of rituals and symbols in maintaining social order and cohesion within a society?
===Choices
Ecological Determin
Social Role Theory
Cultural Materialism
Evolutionary Psychology
Functional Diffusioni... | Structural Functionalism | general_qa | 85 |
The following is a multiple choice question (with answers).
===Question
Who is the British philosopher who authored 'The History of Western Philosophy'?
===Choices
Bertrand A. W. R. Russell
Bertrand A. W. R. R. Russell
Bertrand Russell
Bertrand A. W. R. R. R. R. Russell
Bertrand A. W. Russell
Bertrand Arthur William R... | Bertrand Arthur William Russell | general_qa | 143 |
The following is a multiple choice question (with answers).
===Question
A capacitor of capacitance $ C= \frac {18}{ \pi } mF $ having initial charge $ Q_0 $ connected to an inductor of inductance $ L= \frac {18}{ \pi } mH $ at t=0 . find the time (in mili second) after energy stored in electric field is three times ene... | 6 | general_qa | 125 |
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