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提问人:网友microsohu 发布时间:2022-01-06
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下列说法哪个正确的? Which of the following statements is true?

A、并联电容的总电容是各电容值的调和平均;The total capacitance of the shunt capacitance is the harmonic average of the capacitance values;

B、并联电容的总电容是各电容值的算术平均; The total capacitance of the parallel capacitance is the arithmetic average of the capacitance values;

C、并联电容的总电容是各电容值的算术平均; The total capacitance of the parallel capacitance is the arithmetic average of the capacitance values;

D、串联电容的总电容是各电容值的算术平均; The total capacitance of series capacitance is the arithmetic average of each capacitance value;

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第1题
Which of the following statements is true().
A、The genes involved in cancer are all classed as oncogenes.

B、All genes involved in cancer are of a class called tumor suppressor genes.

C、Both oncogenes and tumor suppressor genes are involved in cancer.

D、No unifying classifications can be applied to the genes involved in cancer.

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第2题
Which of the following statements is TrUE()。
A、You'll not write a good composition until you like the topic

B、When Baker wrote the essay, he thought his teacher would like it

C、Mr. Fleagle had liked Baker's compositions before

D、Baker succeeded in writing two compositions

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第3题
下列说法哪个正确的? Which of the following statements is true?

A、电容单位体积内的储存的能量,正比于电场强度的平方; The energy stored per unit volume of capacitance is proportional to the square of the electric field intensity;

B、电容单位体积内的储存的能量,正比于电场强度; The energy stored per unit volume of capacitance is proportional to the strength of the electric field;

C、电容单位体积内的储存的能量,正比于电势的平方; The energy stored per unit volume of capacitance is proportional to the potential squared;

D、电容单位体积内的储存的能量,正比于电势; The energy stored per unit volume of capacitance is proportional to the potential;

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第4题
以下说法中哪一种是正确的? Which of the following statements is true?

A、电场中某点电场强度的方向,就是试验电荷在该点所受电场力的方向; the direction of the electric field intensity at A certain point in the electric field, is the direction of the electric field force on the test charge at that point

B、电场中某点电场强度的方向可由E=F/q0确定,其中q0为试验电荷的电量,q0可正、可负,F为试验电荷所受的电场力; the direction of the electric field intensity at a certain point in the electric field can be determined by E=F/q0, where q0 is the electric charge of the test charge, q0 can be positive or negative, and F is the electric field force of the test charge

C、在以点电荷为中心的球面上,由该点电荷所产生的电场强度处处相同; on a sphere centered on a point charge, the intensity of the electric field generated by that point charge is the same everywhere

D、以上说法都不正确; none of the above is true;

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第5题
[图]A、高斯面内电荷的代数和为零时,高斯面上各点场强...

A、高斯面内电荷的代数和为零时,高斯面上各点场强一定处处为零; when the algebraic sum of the charges in the Gaussian plane is zero, the field strength of each point on the Gaussian plane must be zero everywhere

B、高斯面内的电荷代数和为零时,高斯面上各点场强不一定处处为零; when the algebraic sum of charges in the Gaussian plane is zero, the field strength of each point on the Gaussian plane is not necessarily zero everywhere

C、高斯面内的电荷代数和不为零时,高斯面上各点场强一定处处不为零; when the algebraic sum of charges in the Gaussian plane is not zero, the field strength of each point on the Gaussian plane must not be zero everywhere

D、高斯面内无电荷时,高斯面上各点场强一定为零; when there is no charge in the Gaussian surface, the field strength of each point on the Gaussian surface must be zero;

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第6题
[图]A、[图]B、[图]C、0D、0...

A、

B、

C、0

D、0

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第7题
[图]A、[图]B、[图]C、0D、0...

A、

B、

C、0

D、0

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第8题
[图]A、[图]B、[图]C、0D、0...

A、

B、

C、0

D、0

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第9题
[图]A、[图]B、[图]C、0D、0...

A、

B、

C、0

D、0

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