The abbreviation for refrigerants containing chlorine, fluorine, carbon, and hydrogen is ____.

A. HFC
B. HCFC
C. CFC
D. HFAC


Answer: B

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What does the term hybrid vigor refer to in a plant?

What will be an ideal response?

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The temperature marking for organic dusts that may dehydrate or carbonize, the temperature marking shall not exceed the lower of either the ignition temperature or ____.

A. 100°C B. 165°C C. 175°C D. 200°C

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Wheel lug nuts should be tightened ________

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