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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1.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

2.單項選擇題The strongest of the natural fiber ropes is().

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

3.單項選擇題The square knot is used for().

A.forming temporary eyes in lines
B.joining two lines of equal size
C.keeping line from unlaying or fraying
D.joining two lines of different size

5.單項選擇題The rolling hitch could be used to().

A.join two lines of different sizes
B.join two lines of equal sizes
C.add strength to a weak spot in a line
D.act as a stopper to transfer a line under strain