试题与答案

Many who () their visits to the dentist re

题型:单项选择题

题目:

Many who () their visits to the dentist regret it later.

A.refer

B.infer

C.defer

D.confer

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A解析:-17.6×1.5=159.85(kPa)σz=4αP0=4×0.062×159.85=39.64(kPa)

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