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?????????????????????6??????30?? (??)??????????????30???????????9????????24????????????????????????????,????????????????(120~160???),?(??30~50??,????????60???????????)???(8??)??

29??????20??30?7???????,??????????????????????????????????????????????????790???50??????????,???18.9%;41?????100???????,??1.0%;??150.3?????

????,30??;????,????,???????(??) ??????:???