单项选择题
Which space（s）is（are）deducted from gross tonnage to derive net tonnage（）.
A.Galley fitted with range or oven B.Open structures C.Passenger spaces D.Boatswain's stores
单项选择题 Which space（s）is（are）deducted from gross tonnage to derive net tonnage（）.
单项选择题 Which space cannot be deducted from gross tonnage when calculating net tonnage（）.
单项选择题 Which of the following tensioning devices is used with webbing to secure light vehicles aboard Ro-Ro vessels（）.
