Systems that operate with HCFC refrigerants, such as R-22, use __________ oil or __________ oil. Systems that operate with HFC refrigerants and HFC blends, such as R-410A, use __________ oil.
What will be an ideal response?
alkylbenzene (AB)
mineral
polyol ester (POE)
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What will be an ideal response?
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The leading state in numbers of sheep and lambs on feed is:
A. Colorado B. California C. Illinois D. Michigan
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How does soil pH affect plant health?
What will be an ideal response?
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____ products are lighter, straighter, and stronger than the traditional materials they replace and are much less likely to warp or split.
A. Engineered B. Painted C. Natural D. Reinforced
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