?? ??????????????7?????
????:1?????????:??????
2?????????????
3??????????
4???????
5??????
??11??22???????????(??????)??????22??????,????????????????????????7????,????“???????????????”?????“?????”??????????“???”?????????????????“????”?
???????????????????????????????????? ?????????????????????????????????????,?????,????«????»??????????????????????????????????????“???????????????????????”?10??,??????“1(??????????????)+N(????????)+X(????)”?????????????,????,????????????????????“????”?????“???????????????”?????“????????”??????????????????????????“??????????????????????????”,??
?????????????????,????,???,???,???;???,???,???????????????????,??????
??,??????????????????????????????????????????????????????????????????????????,????????????????,??,?????????????????????,????????,???????????(???)
???:?????