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Re: Question number 1 for HFC/HFO-1234yf!
Posted to HVAC Forum on 11/1/2010 2 Replies

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I appreciate your openness. Most would not attempt to answer.

To understand "C," the test-taker must read and scrutinize every word. There is one word that is commonly misunderstood, and commonly u... Login to read more.

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