????????????:1?18???,?12306??????????,????????????????18????8??????,?????????????????1.75???????????,????????18???????????????2??1????,???

????:???“????????”??

??,???????????,??“???????”??????“?????”??????,???“??”?????,????????

??,???????????????????????????????????????????,??,????????,????????????????????????????????“??”???800???????????????,????????600????

??????????????????????????????????????????,????1200?????

?????????????????????????????,??????????????????????????????????????????????????“????”“????????”??,???????????????65%?

16??????C919?

?????????????,??16?????????C919?????,??C919????????

??,??????10?C919??????????,???????????????????????????????????3?C919?,???????????????????5????????????,??????????????400???????????????3??C919???????????????,?????????????????4???

??,??C919????????????????????????,???????,??????,??

???:?????????

??

??:???????????,??????????,??????????????