单项选择题

If a mooring line should part while you are tying up at a dock，you should make a temporary eye by tying a（）.

A.becket bend
B.clove hitch
C.bowline
D.square knot

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单项选择题

How many adult life jackets are required on board a ship?（）

A.Enough for 100 percent of the persons allowed on board
B.One for each work station and industrial work site
C.Enough for 150 percent of the persons allowed on board
D.Both A and B above

单项选择题

Heavy fuel oils when spilled are（）.

A.more harmful to sea life than lighter oils
B.easier to clean up than lighter refined oils
C.less harmful to sea life than lighter oils
D.not a real threat to marine life

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Each life preserver must be readily accessible to the person for whom it is intended while he or she is（）.

A.at work
B.in his or her berthing area
C.BOTH at work and in his or her berthing area
D.None of the above are correct