单项选择题
A.to right the raft if it capsizes B.to carry the raft around on deck C.for crewmen to hang on to D.to hang the raft for drying
A.Fires in electrical equipment B.Flammable oils and greases C.Class "A" fires in ordinary combustibles D.Materials containing their own oxygen
A.reduce spud can bearing pressure B.keep the unit level and reduce overloading C.reduce stresses on the hull D.minimize the potential for punch-through