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问题 单项选择题

下列各项中，（）不符合弃船演习的要求。

A.不同的救生艇应尽可能在逐次演习中降落

B.自由溅落式救生艇每6个月至少自由降落、降放一次

C.航行中演习降放救生艇时应在开敞水域进行

D.每次演习应实验供弃船用的应急照明系统

答案

参考答案：C

填空题

如图所示为某宾馆的房卡．只有把房卡插入槽中，房间内的灯和插座才能有电．房卡相当于一个接在干路上   （填写一个元件名称）。房间里有电灯、电视等用电器，它们是   联的．
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单项选择题

Electronic mail, or mail, as it is known to its many fans, has been around for over two decades. Typically, email systems support five basic functions, as described below. (41) refers to the process of creating messages and answers. (42) refers to moving messages from the originator to the recipient. (43) has to do with telling the originator what happened to the message. Was it rejected Was it lost (44) incoming message is needed. So people can read their email. (45) is the final step and concerns what the recipient does with the message after receiving it.

（43）是（）

A.Composition

B.Transfer

C.Reporting

D.Displaying
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