?? ???????????????? ?????????
????:1?????????:??????
2?2023?????????
3???????
4?????
5????????
?????????:??????????????????????????????????????????????????????,????????,?????
?
19???????????????????9??14????????,????,????????????????????/?,????????????
"????""???????????????"????????????
19????,????????????“????”??????“??????”???????????????,??????????????30?????,?????????????????,?????????????????????,?????
C919????
19????,?C919???????,??2?8???????????????,???,????????????????????????????C919????????????????????????????????,?????C919?,?????
????:???????????????