Carbon dioxide (CO2) is one of the newest refrigerants.
Answer the following statement true (T) or false (F)
False
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Who was Ethan Allen?
A. Planter from Virginia B. British General in New York C. Author of “Common Sense” D. Colonial Solider E. French privateer
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Many commercial and industrial complexes use a(n) ____________________ to heat water that is supplied to heat transfer devices that condition the air in a structure or zone.
Fill in the blank(s) with the appropriate word(s).
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_______ should be used only when a lock is not feasible.
Fill in the blank(s) with the appropriate word(s).
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The American Society of Heating Refrigeration and Air Conditioning Engineers (ASHRAE) developed a standard for residential ventilation, commonly referred to as ____.
A. 29.1 B. 43.8 C. 51.5 D. 62.2
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