�??????????�

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

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

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

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

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

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

?????:?????