单项选择题
A spring line leads（）.
A.fore and aft from the ship's side B.to the dock at a right angle to the vessel C.through the bull nose or chock at the bow D.through the chock at the stern
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（）.
单项选择题 A single heavy wire made up for the topping lift is called a（）.
单项选择题 A serving mallet is used in（）.
