???????????????? ???4???????

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

?????????????6????????24?? (?? ??????????)?????24??(???????????“??????????????”)???,??????????“??”??,?2023???????????????????????????,????80%,??????????????40%?

???????????????,??????????,??????????6???????,?37?????????????,?????????????????,??????

???????????,??,???,??41?????27????????????????????????8?????????????????,??,??????????????????????????????????????????????????,“????????????????917”?3????????????,????????????;“??879”?????????????,??;“?77-4”?????????4?????????????????,?25.12??????

???????????????,“????”???????????????,?????????????,????C919??,??????????????????(?????) ???:???????????????