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單項(xiàng)選擇題

The duty of a deck winch is to lift and lower a load by means of a fixed rope on （）.

A.a warp end
B.a mooring winch
C.a worm gear
D.a barrel

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單項(xiàng)選擇題

Most anchor handling equipment incorporates （） for mooring purposes.

A.cable lifters
B.spur wheels
C.bollard
D.warpends

單項(xiàng)選擇題

A variable displacement system of hydraulic drives consists of （）.

A.a variable displacement axial piston pump
B.a constant displacement axial piston pump
C.a reciprocating piston pump
D.a centrifugal pump

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