单项选择题
A.free surface effects are reduced due to pocketing
B.KG is reduced as the vessel seeks the angle of loll
C.effective beam is increased causing BM to increase
D.underwater volume of the hull is increased
单项选择题 An inland oil barge must have equipment available to remove an on-deck oil spill of at least（）.
单项选择题 A shroud is（）.
单项选择题 A pumproom is suspected of accumulating gases after a ventilation machinery breakdown. Where should the combustible gas indicator case be placed when testing the pumproom atmosphere for combustible gases?（）.