Compared to air-conditioning evaporator coils, commercial refrigeration coils have:

A) Materials that are less brittle at low temperatures.
B) About the same number of fins per inch.
C) Fewer fins per inch.
D) More fins per inch.


C

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An aluminum head is discovered to have cracks. Technician A says to repair it by welding with an oxyacetylene welder. Technician B says to use a TIG welder to repair the cracks. Who is right?

A. Technician A B. Technician B C. Both technicians D. Neither technician

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If a plant is allowed to reach the extreme wilting stage, _____ occurs

A) injury B) yellowing C) death D) aging

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Given this table of plant residue analyses, choose the "highest quality" residue in terms of suitability to support an active community of soil organisms and rapid nutrient cycling

A B C D E C/N ratio 15 15 15 45 45 Polyphenol content,% 0.5 6.0 6.0 0.5 0.5 Lignin content,% 10 40 10 40 10 A) A B) B C) C D) D E) E

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The output from an OR gate is LOW ________

A) whenever any input is HIGH B) only when all inputs are HIGH C) only when all inputs are LOW D) none of the above

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