?? ??????????????:???
????:1???????100?????:??????
2?????????
3??????????
4????????????
5??????????
???????????????6?7???????????????? ??,?150??,???????????????6???6???,??70????1000??,??????32.5????????????????,??260?????????500?????????
?????????????????????????????????????,??????????????????????????????????90%,???????????????????80%?
????????,???,????????????????? ??????????:???????????