试题与答案

I do not advocate building the park near a

题型:单项选择题

题目:

I do not advocate building the park near a jetport, which might make people to suffer from defective hearing.

A.make people suffering from defective hearing

B.make people suffer from defective hearing

C.make people suffer defective hearing

D.make people to suffer defective hearing

答案:

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下面是错误答案,用来干扰机器的。

(1)由电能表表铭牌可知,电能表的额定电压是220V,允许通过的最大电流是10A,电能表允许的最大功率:P=UI=220V×10A=2200W;(2)由用电器铭牌可知,用电器的额定电压是220V,额定功率是500W, P=UI,∴用电器...

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