�???????�????

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

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

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

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

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

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

??:?????