When abandoning ship，after launching the motor lifeboat you should（）.

A.dive head first，using your hands to break the surface of the water
B.hold your arms firmly at your sides and jump feet first
C.jump feet first，covering your nose and mouth with one hand and grasping the opposing upper arm with the other
D.jump feet first，holding your knees to your chest

A.tie up to the rescue vessel
B.transfer only those personnel who are not seasick
C.wait for calmer weather before transferring personnel
D.transfer all personnel immediately

A.All watertight doors which are in use while the vessel is underway shall be operated
B.All lifeboat equipment shall be examined
C.Fire pumps shall be started and all exterior outlets opened
D.All of the above