单项选择题
What’s “吃水” in English?（）
A.Draft. B.Draught. C.A+B D.Freeboard.
单项选择题 The （）(天窗) admits light and fresh air through.
单项选择题 The ship’s centerline is the （）(龙骨).
单项选择题 （）(尾尖舱) are at the aft part of the ship.
