?? (??????????)????????:????3000??
????:1???????:??????
2??????????
3?????wx
4?????????
5?????????
??????????? ? ???????? ??????
(???)???:????????????
??????(??)????:????????
?? 1/812??5??,??????????????,????20??90????????,??60%??,????3000????,?????????????????????????????,?1.4??????????(????,????),??1???????????
??????:???
????? ???