?? ??????????????????!??????????????
????:1?????200??qq????:??????????
2?????
3??????
4???sn??
5?????????????
????????“????????????????????????”?????????????,??????“??+??????????+??????”???“??”,??????????????
?,???,???????????????9000????????????????34%,??????????84?????????
?,?????????????????????????????????????,????,“????”?????????????(?????? ?????????????)
??:????