单项选择题
A.popular B.common C.in lead position D.uncommon
The majority of automatic mooring winches are spur gear...
单项选择题The majority of automatic mooring winches are spur geared to improve the backward efficiency of the gear train for rendering()
A.spur geared B.screw geared C.worm geared D.belt driven
In automatic () the winch may be overhauled and wire is...
单项选择题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
The () is used for hauling in or letting out the wires ...
单项选择题The () is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.
A.cranes B.winch barrel C.capstans D.windlass