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下列说法正确的是

A:电荷放在电势高的地方,电势能大

B:无论正电荷还是负电荷,克服电场力做功它的电势能都增大

C:正电荷在电场中某点的电势能,一定大于负电荷在该点具有的电势能

D:电场强度为零的点,电势一定为零

上一题 下一题 0.0难度 选择题 更新时间:2019-12-07 12:43:56

答案(点此获取答案解析)

B

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He had no sooner arrived there ________ pestering his doctor.

同类题2

Joe Brown had a shop. He sold(卖) meat in his shop . One Thursday a woman came into his shop at five to one . “I’m sorry I’m late,” she said. “I need some more meat for my dinner tonight.” Joe had only one piece of meat in his shop. He took it out of the fridge and said, “This is$6.50.”  “That piece is too small.” the woman said, “haven’t you for anything bigger?” Joe went into the room behind his shop, put the piece of meat into the fridge, took it out again and closed the door with lots of noise. Then he brought the piece of meat to the woman and said, “This piece of meat is bigger and more expensive. It’s $8.75.” “Good,” the woman said with a smile,“give me both of them.”

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We carry flags and sing songs. ____

同类题4

补写出下列句子中的空缺部分。

同类题5

—Long time no see.How are things going?

—________,thanks.

 

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