????:1?????????????:????vx

2??????????

3?????????

4??????

5????????

????????,????????????????????75???

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

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

???,????????????,????“????????????”?

???????????,?????????????????????????????????????,????????75?????????,???????????

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

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

“?????,?????????????????????”,«?»???????,?????????,???,?????????

“????????”??????????????,“??????????”?????,???????????“??????”??????????????????????????6??????????????????????????,?????

?????????160????????????????????????????16????……??????«??????????»???????????????,????????????16?????,????……???????????????

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

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

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

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

???????????,????……????,?????????????9????????????,???????????????????????????????????????????,??,????

C919????????????????????????????,?????????????????????……??????,?????,??????????????

?“????????”,?????????;???,???????……??????“??????”,????????????????????

???????????“????”??????“??”,???

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

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

????????????????,?????????,????;??,?????????,????????78.6???????????……??????????????????????,?????????,????????????

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

??????????????????“????????????????”??,????«?????????»???????????……?????????,???????????,???????

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

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

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

22??????????????,????,?????……??????,???????“????????????????????????”????????

???????????????,???????????……?????????????“??????”??????150?????30??????,????????

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

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

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

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

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

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

??????“????”???????????????:“???????????????????;????????”

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

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

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

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

????,???

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