下列工业生产过程中�生的变化其中属于化学变化的是 A.分离液态空气制氧气b.以铁矿焦炭石灰石为原料炼铁c.用活性炭给食品脱色d.分馏 Template




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tomski下列工业生产过程中�生的变化其中属于化学变化的是 a.分离液态空气制氧气b.以铁矿焦炭石灰石为原料炼铁c.用活性炭给食品脱色d.分馏 coloring