单项选择题
A.stand clear of the bitts and use two or more round turns under your figure eights
B.you can surge the line even with a single turn
C.no extra turns are necessary since nylon has a high coefficient of friction
D.stand in the bight of the line
单项选择题 When attempting to free an anchor jammed in the hawsepipe，the simplest method of freeing it may be（）.
单项选择题 When a davit-launched raft is lowered from a ship，upon becoming waterborne，the raft is released by（）.
单项选择题 What is an advantage of having wire rope with a fiber core over that of a wire rope of the same size with a wire core（）.