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EPA 609 Practice Questions with Complete and Certified Answers
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EPA 609 Practice Questions with Complete and Certified Answers R-134a is a chlorine-free refrigerant True Ozone layer absorbs and scatters ________ from the sun ultraviolet light For determining the Ozone Depletion Potential ________ having been assigned a factor of 1 CFC-11 A refillable refrige...
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