________ I think he is Charles. A．Who do

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问题选择题

________ I think he is Charles.

A．Who do you think he is

B．Do you think who he is

C．Whom do you think he is

D．Do you think who he is

答案

答案：A

选择题

As a rough estimate, Nigeria is _______ Great Britain.

A．three times the sizes as

B．the size three times of

C．three times as the size of

D．three times the size of

单项选择题

逆变器的过载保护为（）特性，即设定过载电流为额定电流的1.5倍持续1min后保护，低于1.5倍可延长保护动作时间，高于1.5倍时则保护动作的时间小于1min。

A.无时限

B.反时限

C.不延时

D.反应迅速