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

2????????

3???????

4?????????

5???9???????

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

?????????,??,??????????????????AC332???????,??????????????????????,???????AG600?????????????????

?????????,???C919????,????????????????,C919????50?????

??,??????????????,??????,???????????????????????????

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