单项选择题
Stanchions prevent the entire deck load on a ship from being carried by the（）.
A.bulkheads B.stringers C.frames and beam brackets D.deck longitudinals
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（）.
单项选择题 Reinforcing frames attached to a bulkhead on a vessel are called（）.
