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

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

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

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

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

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

??????:??

??

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