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【Daily Question】Utilities - HVAC - 20190403

2019-04-03View Original

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This post was last edited by hesonchang214 on 2019-4-3 09:33. R12 belongs to the CFC category, R22 belongs to the HCFC category, and R134a belongs to the HCF category. () Answer: Correct
Reply #22019-04-03
R134a belongs to the HFC category

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