某同学用加热氯酸钾制氧气并用排水集气法收集时试管炸裂了造成试管炸裂的原因可能是下列中的�没有给试管均匀预热�夹试管的铁夹夹得过紧� Template




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tomski某同学用加热氯酸钾制氧气并用排水集气法收集时试管炸裂了造成试管炸裂的原因可能是下列中的�没有给试管均匀预热�夹试管的铁夹夹得过紧� coloring