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化肥多少钱一吨,A城有200吨化肥,B城有300,要把他们运往C和D两个城市.从A城运往C.D两地运费分别为20元和25元一吨,从B城运往C.D两地的运费分别为15元和22元一吨,现知C地需要220吨,D地需要280农业资讯1002025-07-10 21:23:04
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