下列叙述正确的是a.水变成水蒸气这一过程属于化学变化b.通入二氧化碳的紫色石蕊溶液�红色说明二氧化碳显酸性c.为了降低水的硬度生活中常 Template




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tomski下列叙述正确的是a.水变成水蒸气这一过程属于化学变化b.通入二氧化碳的紫色石蕊溶液�红色说明二氧化碳显酸性c.为了降低水的硬度生活中常 coloring