题目内容

对于未穿救生衣的落水者来说,最适宜的漂浮姿态应是:

A. 蛙泳
B. 自由泳
C. 仰泳
D. 蝶泳

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编制应变部署表时,应根据船员的:

A. 职务
B. 要求
C. 爱好
D. 特长

The Browns _____ here, but not any more

A. were used to living
B. used to live
C. had been living
D. had lived

隧道工程的主体结构物流通常()。

A. 洞内行车道路
B. 洞身预支护与衬砌
C. 洞身衬砌和洞门构造物
D. 防排水构造物

That was__________ a careless mistake caused by the operator.

A. apparent
B. apparently
C. appear
D. appearance

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