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單項選擇題

In a general cargo crane, three principal movements are （）；（）；（）.

A.hoisting；luffing；slewing
B.lifting；raising；lowering
C.rotating；raising；handling
D.hosting；lowering；moving

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單項選擇題

A warp end may be fitted for operating the derrick topping wire which adjusts the derrick （）.

A.length
B.slack
C.height
D.rotation direction

單項選擇題

These include deck machinery such as mooring equipment, anchor handling equipment, cranes and （）.

A.boilers
B.bow thrusters
C.stabilizers
D.hatch covers