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

2??????

3????????????

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

5???????

2023????????,????????????,????????,????,????????????????,???

????????,???????????????“????????”,?????????????,?????????????????,????????,????,???????????

????????,??????????C919?????????,??????????,???????,“????????”?????,??????????,?????????????????????????

?????,?????????????????????,????????????????,????????,“???????”?“????????”???????

?????????,???????????????,????????,????????,????……?????,????,????????,??????????????????

??????,????????,???????????-??????“???????”?????,???????????????????,??????,????????!

????:??????