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

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

3?????

4??????????

5????????????

????6??????????5??(????????????????????)??????????????,??ARJ21?????????????????????????????C919??????,???????????????,?????1??????????????????,????????(SAF)??????????,???????SAF???????????????

??C919?????????????????ARJ21????SAF????????????????,????“??”?????????????????,????????????????????????????,?????????????????????????????(3??)????40%,???????????,????????????????????????????????????????

?,???????,????,????????????????????“????”,??“???????????????????”,???“??????”,??“??????????”,??????????????????????????????????“????”(??)??????

??????????????????,???,???,??????95%??????????SAF???????????????????,?????????????????????????????,????????

????,SAF??80%?????????SAF???????????????????????????,?????????SAF????????,???????????SAF?????????,??SAF????

(?? ??? ????? ????????? ????? ???? ???)

?????:???