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
The minimum standard headroom for commercial use is _____
A) 6?-4? B) 6?-6? C) 6?-8? D) 6?-10?
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
List five energy sources that may need to be isolated from a piece of equipment being serviced.____________________________________________________________________________________________________________________________________________________________________________________
What will be an ideal response?