单项选择题
A preventer guy（）.
A.prevents anyone from working the cargo at unauthorized times
B.is a safety measure in case one of the outboard guys parts
C.is a longshoreman who watches for accidents
D.is the same as a blacksmith
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单项选择题
A piece of small stuff (small line) secured to an object to prevent it from going adrift is a（）.
A.lanyard
B.keeper
C.noose
D.stopper -
单项选择题
A new coil of nylon line should be opened by（）.
A.pulling the end up through the eye of the coil
B.taking a strain on both ends
C.uncoiling from the outside with the coil standing on end
D.unreeling from a spool -
单项选择题
A mooring buoy，if lighted，shows which color light?（）
A.Yellow
B.White
C.Blue
D.Any color except red or green
