?? ??????????????????
????:1?????:??????????
2??????
3??????
4?????????
5??????????
????????????2?????????????????????7????????????? ????????????????????????:?,??????????????????,??6??????????????????
?????????,???????????6??,???1????26?,??????????????????????6000???????,5???,?????5.2???,??6?,????7???????????????4.0??
?????,??????????????????????,?????????????????????????????????6??????,???3??3?????
????????????,???????20000?????????????,??340???????????????,???????????11000???,??????
??????????,???????,???????????????????????,????????6???(?????????) ??????:????????