单项选择题
The stevedores have already stowed the porcelain ware（）up to the deckhead.
A.loosely B.closely C.heavily D.strongly
单项选择题 The process of lowering a boom to a horizontal position and onto its deck support is called（）.
单项选择题 The minimum length of a boat painter for a lifeboat in ocean service is（）.
单项选择题 The margin plate is the（）.
