The most common cause of airflow-related problems in air-conditioning units is:

A) Dirty condenser coils. B) Electrical issues.
C) Dirty air filters. D) Low refrigerant charge.


C

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Which of the following would provide higher valve seating force?

A. 30 degree cut valve B. 45 degree cut valve C. solid lifter valve trains D. roller type cam followers

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The minimum standard headroom for commercial use is _____

A) 6?-4? B) 6?-6? C) 6?-8? D) 6?-10?

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In preparing fabrication details for a job, ____ provide height information valuable in calculating the height of columns.

A. framing plans B. sections C. connection details D. engineer's sketches

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List five energy sources that may need to be isolated from a piece of equipment being serviced.____________________________________________________________________________________________________________________________________________________________________________________

What will be an ideal response?

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