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