水是宝贵的自然资源通过多种途径可以得到不同程度的净化.使用下列物质能达到净化水质目的是 A.活性炭b.高锰酸钾c.明矾d.澄清石灰水 Template




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tomski水是宝贵的自然资源通过多种途径可以得到不同程度的净化.使用下列物质能达到净化水质目的是 a.活性炭b.高锰酸钾c.明矾d.澄清石灰水 coloring