（1）录入班次信息,可不定时地增加班次数据（2）浏览班次信息,可显示出所有班次当前状总（3）查询路线：可按班次号查询 ,可按终点站查询 （4）售票和退票功能 -(1) Input frequency information, from time to time to increase the frequency of data (2) visit frequency information can show the current status of the total of all tri