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

2??????

3????????

4??????????

5??????

??8??????31?????? (?? ???????????????? ?)?31???????,???????????(???“????”)30??,??????????

????????????????????????????????????????????????????????????

??????????,?????????????8??????,9?????????????????2?????????????????,9?????6??????,?????2024????????????,?????????,???,?????????????,???????,???????????????

?????????????,??????“?????”????????30???????????????????????,??“2+2”??,???,?????????????,??????????????,???????????????

???,??????????C919?????,?????????

??????????????????,???,????????,???????????????????????????????????????????????????,??????,??????????????(??????????????)

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