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單項(xiàng)選擇題

Dangerous goods required to be “carried on deck only” should not be carried on closed vehicle decks，but may be carried on open vehicle deck when authorized by the competent authority concerned. （）

A.under deck
B.on deck
C.ondeck only
D.under deck only

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單項(xiàng)選擇題

Cottonseed oil is classed as a（）.

A.combustible liquid
B.flammable liquid
C.flammable solid
D.poison B

單項(xiàng)選擇題

Corrosive liquids and acids should have what kind of label? （）

A.Skull and crossbones
B.Yellow
C.Red
D.White