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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

單項選擇題

The class of fire on which a blanketing effect is essential to extinguish the fire is （）.

A.class A
B.class B
C.class C
D.class D