单项选择题
The pivoting point of a fully loaded vessel with normal trim proceeding ahead at sea speed is（）.
A.right at the bow B.one-third the length of the vessel from the bow C.one-half the length of the vessel from the bow D.two-thirds the length of the vessel from the bow
单项选择题 The objective of shoring a damaged bulkhead is to（）.
单项选择题 The main function of the drawworks on a ship is to（）.
单项选择题 The joint formed when two steel plates are placed end-to-end is called a（）.
