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填空题
HFCs, PFCs, and SF6 are resulted from various industrial processes.____

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参考解析
解析:
由题干中“HFCs, PFCs, and SF6”定位至C段。本段点明,这些物质在各种工业生产的过程中产生的(are generated in a variety of industrial processes),故匹配段落为C段。
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