单项选择题
The （） returns the pump operating rod to mid position as soon as the helmsman stops turning the wheel.
A.hunting gear
B.cut-off level
C.servo-motor
D.swivel block
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相关考题
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单项选择题
The （） in the steering gear system provides the force.
A.control equipment
B.power unit
C.transmission mechanisms
D.fittings and pipeline -
单项选择题
The cable lifter, mooring drum and warp end of a split windlass may be separately engaged or disengaged means of a （）
A.dog clutch
B.Pair of gears
C.worm gear
D.turning gear -
单项选择题
The rotating unit of a spilt windlass consists of a（） with shaped snugs to grip the anchor cablea mooring drum for paying out or letting go of mooring wires and warp end for warping duties.
A.cranes
B.mooring barrel
C.capstans
D.cable lifter
