?? ?????“??????????????????”?????????
????:1?????????:??????
2???????
3???????
4?????q?
5??????????????
??????9?????21?????? 9????????21?,???????????????????“????????????”????????????“????????”?????????????????,??,???????????,????????????????????????????????????,?????,????????????????????????????????????,??“?????+??????”??,??“?????????”????????????????????????
????????????
9?????21?,????????????????????“?????????????????????????”??(???)????????60????????????????????,???,????MCN??????“????????????????????????”?“????????????????????????”????,????????????????????,????????????????????????????“???????”?????????????,??,??????????(?????????????????????????????????????????)
???????????????:??