单选题:从装有500克浓度为20%1拘糖水瓶中倒出50克糖水后,再向瓶中倒入50克清水,如果将这个过程作为一次操作,请问,第三次 题目分类:中国银行 题目类型:单选题 查看权限:VIP 题目内容: 从装有500克浓度为20%1拘糖水瓶中倒出50克糖水后,再向瓶中倒入50克清水,如果将这个过程作为一次操作,请问,第三次操作完成后,这瓶糖水的浓度变成了( )。 A.16.23% B.18.27% C.14.58% D.20.18% 参考答案: 答案解析:
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