单项选择题
A.Captain. B.Bosun. C.Chief officer. D.Chief engineer.
The person who is in overall command of a ship is （）.A....
单项选择题The person who is in overall command of a ship is （）.
A. captain B. chief officer C. chief engineer D. pilot
Who is the head of a ship? （）A. Captain.B. Chief mate...
单项选择题Who is the head of a ship? （）
A. Captain. B. Chief mate. C. Bosun. D. Chief engineer.
Are you the sailor on duty?（）A. Yes, you are.B. You are...
单项选择题Are you the sailor on duty?（）
A. Yes, you are. B. You are right. C. Yes, I am. D. Not at all.
