单项选择题
When attempting to free an anchor jammed in the hawsepipe，the simplest method of freeing it may be（）.
A.Starting the disengaged windlass at high speed
B.Rigging a bull rope to pull it out
C.To grease the hawsepipe
D.To pry it loose with a short piece of pipe
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相关考题
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单项选择题
When a davit-launched raft is lowered from a ship，upon becoming waterborne，the raft is released by（）.
A.activating the release lock of the hook
B.pulling smartly on the knobbed cocking lanyard
C.the effects of buoyancy removing the weight of the raft from the hook
D.releasing the boarding flap and the bowsing lines -
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（）.
A.Fiber core rope offers greater strength
B.Fiber core rope offers greater flexibility
C.Fiber core rope can be used at higher operating temperatures
D.Fiber core rope is the only type authorized for cargo runners -
单项选择题
What equipment is customarily used when seamen are working on a stage rigged over the side of a vessel（）.
A.Jacob's ladder
B.Manropes
C.Heaving lines
D.All of the above
