实验室加热高锰酸钾制取氧气的操作步骤如下第一步将�量的高锰酸钾装入试管中并用带有导管的橡皮塞塞紧试管. 第二步按图所示装置连接好.第三 Template




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tomski实验室加热高锰酸钾制取氧气的操作步骤如下第一步将�量的高锰酸钾装入试管中并用带有导管的橡皮塞塞紧试管. 第二步按图所示装置连接好.第三 coloring