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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 > 航海英语综合练习

单项选择题

Personnel working aloft (above 2metres) should wear（）or other arresting device at all times.

A.a safety harness with lifeline
B.a safety net
C.a life buoy
D.buoyancy agarments

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（）should generally best for handing acids,alkalis,various types of oils,solvents and chemicals in general.

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