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一、引言目前,我国的民航事业正处在高速发展阶段,航空需求不断增大,飞机大量引进,空中交通流量急剧增加,民航安全形势严峻。正
I. INTRODUCTION At present, the cause of civil aviation in our country is in a period of rapid development. With the increasing demand for aviation, a large number of aircraft have been introduced, the air traffic flow has dramatically increased, and the civil aviation safety situation is grim. positive