单项选择题
The shearing stresses on a ship’s structure are usually greatest at（）.
A.the bow B.the stern C.midships D.the ship's quarter-length points
单项选择题 The safety stopper that prevents the anchor cable from running free if the cable jumps the wildcat is the（）.
单项选择题 The pivoting point of a fully loaded vessel with normal trim proceeding ahead at sea speed is（）.
单项选择题 The objective of shoring a damaged bulkhead is to（）.
