????:1?????:?????v

2???????

3??????ktv???

4?????

5???????

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

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

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

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

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

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

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