变压器的作用是升压或降压。_爱下问搜题

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问题判断题

变压器的作用是升压或降压。

答案

参考答案：错

选择题

— Will you spare me a few minutes now?
— _____. But I'll be free in half an hour.

A. Yes, of course
B. No. I can't
C. Yes, with pleasure.
D. I'm afraid not

单项选择题

（）your latest tropical storm warning information?

A.What is

B.How is

C.What are

D.How are