List four heat pump classifications.

What will be an ideal response?


air-to-air
air-to-liquid
liquid-to-air
liquid-to-liquid

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According to AIA A312-2010 Section 3, what are the three steps the owner should take in order to trigger the surety’s bond obligations?

What will be an ideal response?

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What gives a visual indication of the airflow needed to maintain the target pressure in the furnace chamber or duct?

A. Instrument control systems B. Pressure gauge C. Interlock control system D. Draft control system

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To be effective, a grounding system must limit the voltage on the electrical system and protect it from _____.

a. contact with the earth b. voltage surges c. vandalism d. undervoltage conditions

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When two metal components clamped by fasteners are allowed to move against each other, the result is:

A. impact damage B. stress damage C. fretting damage D. fatigue damage

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