?????????????? 16??????C919“??”??

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