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单选题
In automatic （） the winch may be overhauled and wire is paid off the barrel at a pre-determined maximum tension.
A
cranes
B
windlass
C
capstans
D
mooring winches
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单选题In an automatic mooring winches, the wire is paid off the barrel at（） a tension and is recovered at（）tension.A
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考题
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考题
单选题（） may be fitted for operating the derrick topping lift (the wire which adjusts the derrick height).A
A capstanB
A holdC
A warp endD
A mooring drum
考题
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考题
单选题When the power is shut off, the wire（）A
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考题
单选题What happens to the pulling power of a winch when retrieving wire rope?（）A
It increasesB
It decreasesC
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考题
单选题Which will cause a wire rope to fail（）.A
Using a medium graphite grease as a lubricantB
Operating a winch too slowC
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单选题Which statement concerning an automatic towing engine is FALSE? （）A
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It prolongs the life of the hawser by distributing chafing as the hawser is paid out and taken inC
As tension on the hawser increases，more line is taken in by the automatic towing engineD
As tension on the hawser decreases，more line is taken in by the automatic towing engine
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