题目内容

闭合电路欧姆定律的内容是闭合电路的电流跟电源的电动势成正比，跟内、外电路电阻之和成（）。

A. 正比
B. 反比
C. 平方比
D. 正弦关系

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欧姆定律描述的是（）之间的关系

A. 电压、电流、功率
B. 电压、电流、电阻
C. 电流、电量、时间
D. 电流、电阻、时间、热量

This problem is too complicated. Let’s leave it ____ for the moment.

A. on
B. behind
C. aside
D. off

this day, these experiences are still _great value.

A. To, with
B. To, of
C. On, in
D. Until, at

More than a hundred policemen were sent _ _search of the bank robbers.

A. out, for
B. off, to
C. out, in
D. away, on