单项选择题
A.straight
B.to port
C.to starboard
D.None of the above
单项选择题 When abandoning ship，after launching the motor lifeboat you should（）.
单项选择题 When abandoning ship and jumping into the water from a substantial height without a life jacket，you should（）.
单项选择题 When a rescue vessel approaches a lifeboat in heavy seas，the person in charge of the lifeboat should（）.