99色精品-9色在线-99色在线-99色视频 国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

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

微信掃碼免費(fèi)搜題