题目内容

For the purpose of training and drills，if reasonable and practicable，rescue boats on board

A. once a week
B. once a month
C. once a year
D. twice a year

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You are preparing to take another vessel in tow．Which signal indicates，Hawser is made fast

A. Firing of a green star signal
B. Firing of a red star signal
C. An orange smoke signal
D. Three white star rockets at 1-minute intervals

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When steering by hand，which of the following may be a functional input to the steering gear as a result of turning the wheel ________．

A. Non-follow-up
B. Rudder adjustment
C. Weather adjustment
D. All the above may be activated

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There are two areas off the N coast of France，which remain dangerous because of ______．

A. the density of vessel traffic on passage through the strait
B. the fact that the passage through the strait is constricted by a series of narrow banks，running NE-SW
C. mines lied in the war of 1939-1945
D. the strong tidal streams in the strait

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兔疫比浊法的优点不包括

A. 简便快速
B. 易于自动化
C. 无放射性污染
D. 能进行批量检测
E. 使用吖啶酯为标记物

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For the purpose of training and drills，if reasonable and practicable，rescue boats on board

A. once a week B. once a month C. once a year D. twice a year

You are preparing to take another vessel in tow．Which signal indicates，Hawser is made fast

When steering by hand，which of the following may be a functional input to the steering gear as a result of turning the wheel ________．

There are two areas off the N coast of France，which remain dangerous because of ______．

兔疫比浊法的优点不包括

A. once a week
B. once a month
C. once a year
D. twice a year