["1号,2 27 июля 2年 7月7号练
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单选题（答错为零分） 加热炉对流管露点腐蚀是由于燃料含硫元素在燃烧中经氧化生成( B )。 A、 SO2 B、 SO3 C、 CO2 D、 CO 发帖1天后回复不评分，谢谢回复
加热炉对流管露点腐蚀是由于燃料含硫元素在燃烧中经氧化生成( B )。 A、 SO2 B、 SO3 C、 CO2 D、 CO
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