单项选择题
A piece of small stuff (small line) secured to an object to prevent it from going adrift is a（）.
A.lanyard B.keeper C.noose D.stopper
单项选择题 A new coil of nylon line should be opened by（）.
单项选择题 A mooring buoy，if lighted，shows which color light?（）
单项选择题 A monkey fist is found on a（）.
