The street are all wet.It ___ during the

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问题选择题

The street are all wet.It ___ during the night.

A．must be raining

B．must havge been rain

C．had to rain

D．must have rained

答案

答案：D

单项选择题

用化学灭菌法进行器械灭菌时，应浸泡器械（）时间才有效。

A、30分钟

B、20分钟

C、10分钟

单项选择题

Marine insurance covering All Risks, War Risks, and S. R. C. C. for full CIF value shall be covered （） the buyer's store in New York.

A. up to

B. until

C. in

D. into