?? ???????????????????????
????:1???????:??????
2???????
3????????
4????????
5???????
???2?????????2?? (?????????????????? ????)2????????2????,??????,??????????????????,???????????????????,???,???????????
???????????????,?????????????????????,?2????1????,??????,???????????2????????2?????,????,????????????????,?,??
??,2?????2??????????,??????????,?S2???????????G5??????????????G4215?????,??????????,G42????
?????????,??????????,?????????????24??,??????“??????????”???????????????????,??????????????,???????
???????????,????,????????????????????,?????????????????????,???????,?????????,???????????????,?????????????????????????????????????????????????????????,????,??????????,??????????????(???????????)
??:??????