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單項(xiàng)選擇題

The key to rescuing a man overboard is（）.

A.good communication
B.a dedicated crew
C.good equipment
D.well-conducted drills

單項(xiàng)選擇題

The indication of a slipping anchor is a(n)（）.

A.decrease in mooring line length
B.increase in the opposite amperage
C.increase in the opposite line tension
D.decrease in mooring line tension and amperage