有一条电阻线，在其两端加1V的电压时，测得电阻值0.5Ω；如果在

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问题单项选择题

有一条电阻线，在其两端加1V的电压时，测得电阻值0.5Ω；如果在其两端加10V的电压时，其电阻值为（）。

A、0.5Ω

B、5Ω

C、0.05Ω

D、20Ω

答案

参考答案：A

选择题

— Have you graduated from collage?

— Yes, ________.

A．I studied French for two years.

B．I have been studying French.

C．I have studied French for two years.

D．I had studied French for two years.

问答题简答题

海平面变化的影响因素。