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

???????????2??7???? ??????????:??????????????????,????????????,???6??

???????????????,??6?,?????1?????????????????26??,??????????????6000?????,5?????,?????????????5.2?????,???????6???,??7??????4.0???

?,?????,?????????????????????????????????6?????????,???????3?????????????3???????????

????,????????20000???,???340??????????????????????????,??????????11000?????????,??????????????????????

????,??????????????,???????,?????????????6?????????????(????????????????????????) ????:????????????