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

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

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

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