单选题In automatic （） the winch may be overhauled and wire is paid off the barrel at a pre-determined maximum tension.AcranesBwindlassCcapstansDmooring winches
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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