| 源码简介： |
该程序实现了航空客运订票系统的管理，包括如下功能： A查询各航班航线 B乘客客票预定业务C.乘客办理退票业务 D查询某航班订票信息 -The program implements the management of air passenger booking system, including the following functions: A check flight passenger ticket scheduled route B Business C. refunds passengers of a flight booking business information query D
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