单项选择题
---Ring off engine! ---Ring off engine! （）
A. Finished with engine! B. Engine rung off! C. Engine stand by! D. Got it.
单项选择题 ---Stand by engine! ---Stand by engine!（）
单项选择题 Who is the head of the deck department?（）
单项选择题 The person who is in overall command of a ship is （）.
