单项选择题
甲板部由大副负责。（）
A. The captain is the head of a ship. B. The master is the head of a ship. C. The deck department is under the command of the chief officer. D. The pilot is the head of a ship.
单项选择题 左舵5。（）
单项选择题 右舵10。 （）
单项选择题 舵角多少度?（）
