一件商品200元,比原价降低了50元,降低了( )%.2、7时25分=( )时 ( )平方千米=75公顷=( )平方米9升875毫升=( )立方分米.3、一个圆柱体的侧面展开圆是边长为31.4厘米的正方形,这个圆柱
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![一件商品200元,比原价降低了50元,降低了( )%.2、7时25分=( )时 ( )平方千米=75公顷=( )平方米9升875毫升=( )立方分米.3、一个圆柱体的侧面展开圆是边长为31.4厘米的正方形,这个圆柱](/uploads/image/z/10248351-15-1.jpg?t=%E4%B8%80%E4%BB%B6%E5%95%86%E5%93%81200%E5%85%83%2C%E6%AF%94%E5%8E%9F%E4%BB%B7%E9%99%8D%E4%BD%8E%E4%BA%8650%E5%85%83%2C%E9%99%8D%E4%BD%8E%E4%BA%86%EF%BC%88+%EF%BC%89%25.2%E3%80%817%E6%97%B625%E5%88%86%3D%EF%BC%88+%EF%BC%89%E6%97%B6+%EF%BC%88+%EF%BC%89%E5%B9%B3%E6%96%B9%E5%8D%83%E7%B1%B3%3D75%E5%85%AC%E9%A1%B7%3D%EF%BC%88+%EF%BC%89%E5%B9%B3%E6%96%B9%E7%B1%B39%E5%8D%87875%E6%AF%AB%E5%8D%87%3D%EF%BC%88+%EF%BC%89%E7%AB%8B%E6%96%B9%E5%88%86%E7%B1%B3.3%E3%80%81%E4%B8%80%E4%B8%AA%E5%9C%86%E6%9F%B1%E4%BD%93%E7%9A%84%E4%BE%A7%E9%9D%A2%E5%B1%95%E5%BC%80%E5%9C%86%E6%98%AF%E8%BE%B9%E9%95%BF%E4%B8%BA31.4%E5%8E%98%E7%B1%B3%E7%9A%84%E6%AD%A3%E6%96%B9%E5%BD%A2%2C%E8%BF%99%E4%B8%AA%E5%9C%86%E6%9F%B1)
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