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现行初三化学课本P120有CO还原CuO的实验,高中课本有CO还原Fe_2O_3的实验,实验过程中都存在着下列缺点:①课前准备和课
The current P.3 chemistry textbook P120 has an experiment of reducing CuO by CO. High school textbooks have experiments of CO reduction of Fe_2O_3. The following disadvantages exist in the experiment process: 1 Preparation and lessons before class