单项选择题
救生艇置放在于艇甲板。（）
A. Lifeboat is located on the boat deck. B. Lifeboat is located on the main deck. C. Life craft is located on the boat deck. D. Lifeboat is located on the lower deck.
单项选择题 清洁，涂漆，修理工作称为船舶保养工作。（）
单项选择题 在船上，打扫卫生是经常性工作。（）
单项选择题 水手在船首进行了望。（）
