单项选择题
Initial stability of a vessel may be improved by（）.
A.removing loose water B.adding weight low in the vessel C.closing crossover valves between partly filled double bottom tanks D.All of the above
单项选择题 In astern towing，a tow span，also called the tow bar or towing arch，is used to（）.
单项选择题 If the cause of a sudden severe list is negative initial stability，counterflooding into empty tanks may（）.
单项选择题 Fighting a fire in the galley poses the additional threat of（）.
