请运用化学知识回答以下问题1生铁和钢的主要成分是铁炼铁的主要设备是高炉.2已知试管内的镁条和铁片表面均被打磨洁净且形状大小均相同 Template




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tomski请运用化学知识回答以下问题1生铁和钢的主要成分是铁炼铁的主要设备是高炉.2已知试管内的镁条和铁片表面均被打磨洁净且形状大小均相同 coloring