The total job takes 3.5 hours. What is the average hourly cost of labor, to the nearest cent?

A. $19.86
B. $20.34
C. $20.58
D. $21.64


Answer: A

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Food and water receptacles can be sanitized using

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Which type of diode can be used in a digital display window?

A. light emitting diode B. zener diode C. small signal diode D. photo diode

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When performing the startup and operational check for reciprocating compressors, check that the compressor's soft foot has been ________ to the manufacturer's specifications

A) repaired B) torqued C) purged D) shimmed

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Refer to the figure below. On an HCFC-22 system, liquid line pressure is 202 psig (1,393 kPa) and the measured liquid line temperature is 100°F (37.8°C). The subcooling is _____.



a. 1°F (0.6°C)
b. 2°F (1.1°C)
c. 4°F (2.2°C)
d. 8°F (4.4°C)

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