When a purge-recovery unit runs to purge the air from the condenser of a low pressure chiller, most of the refrigerant that is purged with the air is
A) released with the water. B) released into the air.
C) reused as chiller fuel. D) recovered and returned to the system.
D
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The top of the thread is called the _____.? ?
A. crest? B. root? C. thread face? D. thread flank?
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The air entering a walk-in refrigerator air cooled condenser is 85°. What should the condensing temperature be?
a.100° b. 110° c. 115° d.120°
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Nearly all organic compounds from which living beings are made have as their backbone, chains or rings of ________ atoms
A) carbon B) nitrogen C) oxygen D) aluminum E) none of the above
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What kind of signals can result from the process of modulating a signal with data to be transmitted?
A. harmonics B. passbands C. modulators D. sidebands
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