单项选择题
Between the side frames on a vessel，support for the deck beams is provided by（）.
A.stanchions B.brackets C.web frames D.deck stringers
单项选择题 An upright vessel has negative GM. GM becomes positive at the angle of loll because the（）.
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（）.
