单项选择题
In the manufacture of wire rope，if the wires are shaped to conform to the curvature of the finished rope before they are laid up，the rope is called（）.
A.composite B.left-lay C.improved D.preformed
单项选择题 In order to retrieve an inflatable life raft and place it on deck，you should heave on the（）.
单项选择题 In determining the scope of cable to be used when anchoring，what would NOT be considered?（）.
单项选择题 Immersion suits must be stowed（）.
