单项选择题
Much time is spent （）(保养) the ship at sea.
A. watching B. maintaining C. look outing D. taking after
单项选择题 The fore part of a ship is called the （）(船头).
单项选择题 The （）(尾楼) deck is at stern.
单项选择题 A deck above the main deck at the bow is the （）(首楼) deck.
