The most important elements to check for in gas furnaces are adequate combustion air and:

A) Electrical connections. B) Refrigerant levels.
C) Proper venting. D) Airflow components.


C

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? Identify and state the historical significance of the Tripolitan War.

What will be an ideal response?

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Vibration ________ measure and compare the amplitude and frequency characteristics of a vibration

A) oscilloscopes B) stroboscopes C) electronic filters D) spectrum analyzers

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Select the gases that are safe to use for refrigeration system pressure testing. (You may select more than one.)

A) Oxygen B) Acetylene C) Nitrogen D) Carbon dioxide

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Foundation walls are dimensioned face to center.

Answer the following statement true (T) or false (F)

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