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问题 单项选择题

压力容器分四个压力等级，其中中压容器压力等级为（）

A、0.1Mpa≤p≤1.6MPa

B、1.6Mpa≤p≤10MPa

C、10Mpa≤p≤1.6MPa

答案

参考答案：B

单项选择题

采用金属管配线时，应将金属管与（）连接后再重复接地。

A、保护接地

B、零线

C、工作接地

D、地线
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填空题

CONVERSATION 2 (Questions 5-8)


Jeff has lived in New York for (5) years.
Jeff doesn’t like (6) , (7) and (8) of New York.

CONVERSATION 2(Questions 5-8)


The woman is working at the campus (5) office.
The man can work at least (6) hours a week but not more than (7) hours a week from (8) on.
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