????? ????????

????:???????:?????50??????

?????????????(????????):??????????,???????,???????????????????,????,??

??????????,???????????????????,??????????60%?????,??????????????????????,???????????????????

?????????,???????1800???????????????????6??????6??,?????????6??????????????????

?????????,?????????????????????,??????????,????????800??????????????????

?????????????????,?????????,?????,??21???????

6?????15??,???????,???????????,?????????????,???????????????????????,??????????????74?????????????85%??????

?????????(6?????16?????????)??,?417????????,?13?????????????????,?????,?? ???:????????????????