单项选择题
Strengthening damaged bulkheads by using wood or steel is called（）.
A.bracing B.battening C.blocking D.shoring
单项选择题 Stanchions prevent the entire deck load on a ship from being carried by the（）.
单项选择题 Stable equilibrium for a vessel means that the metacenter is（）.
单项选择题 Ship’s officers should check every cargo compartment after it is filled with bulk grain to ensure（）.
