单项选择题
A.cotton B.lumber C.steel D.tires
Instead of whipping an end of a line，a temporary means ...
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
If you were to pass a stopper on a wire rope，what shoul...
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
If kinking results while wire rope is being coiled cloc...
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
