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

????:????qt?????:??????

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

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

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

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

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

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

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