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

??

?????????2?????9??,????????????23?????????????,????1???????????????1?????????????????????,????????????????????????????????????????????50????????????????,??49?,???????????45?????????????????,?????????2??????????????10???????

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

???????????????,?1?????,?????????9???????30?????1???????????????1?????????????????????,???1????????????1???????,???????????2???????????2????????????3?????????3,?????,???,?????????

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

????????,?????32?????????,?(VAR)????????,??????????????,??,??????

?????????????????????????????,??????????,????????9?1??????????????,????????????????????50?????????,?,??????????????????????,???????????????????????

??????????,????????,2???????????12??????????????,????????,???????2???????????????20?????????????????????,?,?????????????????????,???

?????????????,???:“????????????????,???????,????,?????????,?????????,??”

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

?????????

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

????????