下列变化中前者是物理变化后者是化学变化的是a干冰升华白磷自燃b无水硫酸铜吸水浓盐酸挥�c煤的燃烧钢铁的生锈d动物的�吸光合作用 Template




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tomski下列变化中前者是物理变化后者是化学变化的是a干冰升华白磷自燃b无水硫酸铜吸水浓盐酸挥�c煤的燃烧钢铁的生锈d动物的�吸光合作用 coloring