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

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