单项选择题
A.Tube fitted to an ullage hole B.Area the product is loaded into C.Void or empty space separating two tanks D.Opening in the deck used for cleaning a tank
What can cause a lack of oxygen in a chain locker（）．A.A...
单项选择题What can cause a lack of oxygen in a chain locker（）．
A.Absorption B.Osmosis C.Evaporation D.Oxidation
Tonnage openings must be closed by means of（）.A.Press b...
单项选择题Tonnage openings must be closed by means of（）.
A.Press board B.Steel hatch boards C.Steel plates D.Wooden hatch boards
The Vessel’s cargo holds are properly fitted with（）in w...
单项选择题The Vessel’s cargo holds are properly fitted with（）in way of hatches.
A.Floor-ceiling B.Battens C.Covers D.Hard-wood boards
