?? ?-20?????????????
????:1????????????:???????????
2????????
3??????????
4???????
5?????
???????1??????????7?????????????????? ????????????7??,????????????,?-20???,?????,??????????????
7???????????9???????????????5?,??6.8??????????????????????,??????????,???????,???????????,??????????,?????????????,??????????????,?????????????????????????????
?????11???????????,?????????????????????200??????????,1000????
14??5?????????????????????,???-20??,??????????????,?????????????,???????????,??????????,??,??????????????????????
?????,??,????1??????????,?????,????????
??????????,??,???,??,?,????????7??15??????30?595??????????,??????????????120?,??????32?????,?????????12??(?????) ???:??????????