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單項(xiàng)選擇題

If ignited, which of the listed materials would be a class "B" fire?（）

A.Magnesium
B.Paper
C.Wood
D.Diesel Oil

單項(xiàng)選擇題

Which statement concerning the collection of fresh water is FALSE?（）

A.Fresh water may be obtained from fish
B.lifeboat covers or canopies should be washed with rain before drinking water is collected
C.Fresh water may be collected from condensation inside the life-raft
D.Freshwater cannot be produced from standing seawater