单项选择题
A stopper is（）.
A.a short length of line used for temporarily holding another line B.a snatch block for handling a topping lift C.an engine order telegraph D.the brake on a cargo winch
单项选择题 A stay is（）.
单项选择题 A spring line leads（）.
单项选择题 A small light tackle with blocks of steel or wood that is used for miscellaneous small jobs is called a（）.
