??�????????�????

????:?????????:????????

???11??22???(????)?????22??????????,?????????????????????????????????????????????????7????????????????,???????????????�?????�?????�??????????????????�????�????�??�???�?

??????????? ??????

???,????,??????????????�????????????�?????????????????????????????�??????????????????????????????�????10????,??????????????????????????�1(??????)+N(??)+X(????????)�??????????????????????????,???,??�??????�?????�????????????????????�???????�????�??????�???�,??????????????????????

?????????,????,???,??,??????;????,???????????????,??????????????????????????????,?????

???,???????????????????????????????????????,????????????????????????????,???,??,?????,?????????(??????????????????????????)

??????????????????:??????????????????