How many air changes per hour can a fan moving 200 CFM provide for a room with 500 sq ft of floor space and 8-ft ceilings?

A) 3 air changes B) 20 air changes C) 1 air change D) 12 air changes


A

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A new refrigerant, required to be used in the USA beginning in year 2021, is ________.

A) SNAP 2011 B) R 1234yf C) R 134a D) R 744

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The analogy that explains why it is important to allow the customer to vent and tell their story before you do anything else is called _______

A) Letting off steam B) The plate C) The bucket D) Letting it all out

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Who is the person that greets the service customer and completes the work order?

A) Service manager B) Service writer C) Service advisor D) Either B or C

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An electrochemical reaction occurs because ____

a. an anion turns into a cation b. a cation turns into an anion c. oxidation/reduction reactions move electrons d. an electrolyte goes through combustion

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