单项选择题
Uncoiling manila line improperly can result in a(n)（）.
A.number of fishhooks
B.kink in the line
C.50% loss of efficiency of the line
D.increase in deterioration of the line
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Two mooring lines may be placed on the same bollard and either one cast off first if（）.
A.the eye of the second line is dipped
B.the mooring lines are doubled
C.the bollard has two horns
D.one of the lines is a breast line -
单项选择题
Tugs sometimes shackle a length of chain in the towline in order to（）.
A.take the wear should the towline drag bottom
B.assure that if the towline is overstressed it will part close to the bridle
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D.put spring in the towline -
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A.passes over the stern of the towing vessel
B.passes through chocks
C.is attached to the disabled vessel
D.All of the above
