单项选择题
What business do you have? —I want to see your （）(船长).
A.bosun B.chief officer C.captain D.pilot
单项选择题 --Where is the（）(水手长)? --He’s in his room.
单项选择题 Check （）(危险区) and report , please.
单项选择题 They should take care of the （系泊缆绳）（）.
