单项选择题
A fid is a（）.
A.mallet used when splicing wire rope B.sharp pointed crow bar used to unlay wire rope C.tapered steel pin used to separate wire rope D.tapered wooden pin used when splicing heavy rope
单项选择题 A common class of wire rope is the 6X37 class. What does the 37 represent?（）
单项选择题 A Chinese stopper (two lines) will hold best when you（）.
单项选择题 A cargo hose is marked with the（）.
