????2?2??? ??????,??2????1????,??????1???????31?,????????????,???????????????????????19?????????????

??????:????,????????????1?31??????,??????????,??????????

??????????????????,??????????????????????????????????2???????1???????????????????,?,?????????????

?????????????????????????,??????????1??????????31?,????????????????????????,???????????????????????????????????,???????

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

?????,?????2?1????????????????????????,??????????,???

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

??

??:???????????,??????????,??????????????