單項選擇題

The use of（）between bags may lead to chafe and tearing of the bags.

A.strips of burlap
B.heavy paper
C.dunnage boards
D.strips of rope yarn

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單項選擇題

The tackle that raises and lowers the boom is（）.

A.the cargo fall
B.The cargo hoisting wire rope
C.the topping lift
D.the cargo whip

單項選擇題

The strongest of the natural fiber ropes is（）.

A.Nylon
B.Dacron
C.Manila
D.Sisal