单项选择题
The （）(天窗) admits light and fresh air through.
A.skylight B.bulwark C.keel D.bulkhead
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.
单项选择题 （）(前尖舱) are at the fore end of a ship.
