单项选择题
The deck from bow to stern is called the （）(主甲板).
A. main deck B. tweendeck C. upper deck D. lower deck
单项选择题 The height from water level to deck is called （）(干舷).
单项选择题 The hull is divided by decks and （）(舱壁).
单项选择题 These tanks are called （）(双层底) tanks.
