A.5km; B.10km; C.15km; D.20km
A.對流層B.平流層C.中層D.熱層
A.空氣達(dá)到飽和; B.凝結(jié)現(xiàn)象發(fā)生; C.氣溫降到露點(diǎn); D.以上都是