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全部科目 > 水路交通运输技能考试 > 海船船员考试 > 船舶管理(驾驶专业) > 航海英语 > 海上应急用语 > 安全用语

单项选择题

Proper use shall be made（）radar equipment if fitted and operational.

A.of
B.to
C.on
D.with

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单项选择题

Keep clear（）the buoy.

A.to
B.on
C.of
D.for

单项选择题

In the International Code of signals，a group of three letters indicates（）.

A.urgency or an emergency
B.the vessel's national identity signal
C.a group from the general signal code
D.a group from the medical signal code

单项选择题

In order to prevent galvanic corrosion，an aluminum boat must be insulated from the davits and gripes. Which of the following is acceptable as an insulator?（）

A.Hard rubber
B.Canvas
C.Leather
D.Sponge rubber

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