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

2???????

3???????????

4?????????????

5?????????

???2?????????????19????????????????????(?????????)19????,??????????,?????????????????????????“????????”???,?????????????,????“????”?

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

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

??,??2.8??,????,??????????JD605?????????????“????”???????,??????????

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

??????????,??????????????????????,???;?????????????????,?????,????,??????????,?????????????????????????????????

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

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