????2????3??????? ??????:?????????????3?????,???15?,?????????14???????????????????

?????,??3?????????

??????????????3?????????????????,???,???????????????????15?????????,????????

???,?,???????

???????????????,???????

????????????????????“????????”?????????,????????“???”????????????????????,???(???????) ????????:????? “????SN????”_????

?? ?15????????????????

????:1?????SN????:???????????

2?????????????

3??????200????

4???????????

5???????

????2????3??????? ??????:?????????????3?????,???15?,?????????14???????????????????

?????,??3?????????

??????????????3?????????????????,???,???????????????????15?????????,????????

???,?,???????

???????????????,???????

????????????????????“????????”?????????,????????“???”????????????????????,???(???????) ????????:?????