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單項選擇題

Anchor capstans are used in some installation where the cable lifter rotates about a （）.

A.horizontal axis
B.crankshaft
C.vertical axis
D.camshaft

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單項選擇題

Prior to running the hydraulic pump, examine the system carefully and ensure that the lever of control valves is in （） position.

A.neutral
B.end
C.opening
D.closure

單項選擇題

Anchor（） are used in some installations where the cable lifter rotates about a vertical axis.

A.windlasses
B.drums
C.capstans
D.warp ends