单项选择题
Manila slings should not be used to load（）.
A.cotton
B.lumber
C.steel
D.tires
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相关考题
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单项选择题
Instead of whipping an end of a line，a temporary means of preventing the line from unraveling is to tie a（）.
A.becket bend
B.blackwall hitch
C.figure-eight knot
D.square knot -
单项选择题
If you were to pass a stopper on a wire rope，what should the stopper be made of（）.
A.Wire
B.Manila
C.Nylon
D.Chain -
单项选择题
If kinking results while wire rope is being coiled clockwise，you should（）.
A.coil it counterclockwise
B.not coil it
C.take a turn under
D.twist out the kinks under a strain
