It is not clear that how different enriched oxygen gas protects aircrew and passenger during emergency oxygen supply , especially , under the condition of passenger ' s mask not hermetic in 12 000m high altitude , and whether molecular sieve oxygen generation system ( msogs ) can vi be used above 8 500m . these problems are all need molecular biological proof 在現(xiàn)代航空飛行員和乘客的防護(hù)問題上,高空應(yīng)急供氧時間內(nèi)不同供氧水平對機(jī)體的影響尚不清楚,如12000m高度旅客面第四軍醫(yī)大學(xué)碩士學(xué)位論文罩不氣密時供氧防護(hù)效果,以及采用分于篩供氧能否提高適用高度等問題,急需從分子生物學(xué)水平提供理論參考。