The compressors used in low pressure chillers are the ____ type.
A. reciprocating
B. scroll
C. screw
D. centrifugal
Answer: D
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A container of contaminated refrigerant should be colored ________.
A) Green B) Gray with a yellow top C) Black with a red stripe D) Blue
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What was the time frame during which the domestication of plants occurred?
What will be an ideal response?
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One of the highest levels of verbal communication occurs when speakers use what to make their points?