?? ????????? ???????????????
????:1??????:?????????
2??????
3?????150??
4???3??400???????
5??????
???,???12??18???,????,????????????“??”????,??????“???????????”,????
????????????????????“????”????4300??????????,????????153?????,???????3000???????????
???,????,????40??????????23???????????????????????????,???20%?????????????????,??100??????????????????????150???????????????????????????“21????”,???“?????”????????????????,???????????“????”?????????????????(? ?? ????????? ??????????? ???)
???:????????