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

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

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

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

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

????:1???????:??????

2???????????

3???????

4?????????

5????????

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

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

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

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