单项选择题
The tweendecker has（）below the main deck.
A.another deck B.two other decks C.no deck D.additional deck
单项选择题 The terms ceiling and margin plate are associated with the（）.
单项选择题 The stevedores have already stowed the porcelain ware（）up to the deckhead.
单项选择题 The process of lowering a boom to a horizontal position and onto its deck support is called（）.
