單項選擇題

What is normally used to pass a mooring line to a dock（）.

A.Distance line
B.Gantline
C.Heaving line
D.Tag line

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單項選擇題

What is meant by the term two-blocked（）.

A.The bottom block touches the top block
B.The line has jumped the sheaves
C.There are turns in the fall
D.You have two blocks

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