铁元素一直是各类考试的热点元素,它的单质及其化合因变化多种多样,通过它可以从多种角度、多层次考查或培养多种能力,下面是两道研究性试题的分析与解答,供大家学习时参考。 Iron has always been the hottest element in all kinds of examinations. Its elemental and compounding causes vary widely. Through it, it can examine or cultivate a variety of abilities from different perspectives and levels. The following are the analysis of two research questions Answer, for everyone to learn reference.