下面所述的各物质中属于纯净物的是 A.纯净的空气b.苏州东山开采出的石灰石c.冰水混合物d.用高锰酸钾制取氧气后剩余的固体 题目和参考答案 Template




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tomski下面所述的各物质中属于纯净物的是 a.纯净的空气b.苏州东山开采出的石灰石c.冰水混合物d.用高锰酸钾制取氧气后剩余的固体 题目和参考答案 coloring