一、全球航空运输业所面临的航材问题t目前，民用航空业是全球发展速度最快的行业之一。同时，也是竞争压力最大的行业之一。每家承运人都在认真思考如何有效地降低总成本，提高资源管理水平，以期增加利润。而困扰他们实现这一目标的一个严重阻碍是航材问题。航材是 First, the global air transport industry is facing the problem of aviation materials Currently, the civil aviation industry is one of the fastest growing industries in the world. At the same time, it is also one of the most competitive industries. Each carrier is seriously considering how to effectively reduce the total cost and improve the level of resource management, with a view to increasing profits. A serious obstacle to their achievement of this goal is the issue of aviation materials. Air material is