单项选择题
The deck below the main deck is called ‘tween deck.()
A.主甲板以下的甲板叫做二层甲板。 B.主甲板以上的叫做上层建筑。 C.露天甲板以上的甲板叫做上层建筑。 D.露天甲板以下的甲板叫做上层建筑。
单项选择题 Bitumen is used for bilges and peak tanks.()
单项选择题 The height from waterline to the bottom of ship is called draft.()
单项选择题 Sailors must keep lookout in poor visibility.()