Answer:
21: False 22: Unprofessional behavior 23: True Explanation:
Hope this helps!
The answer to your question is value.
The technician should start by checking the temperature rise across the indoor coil.
<h3>Who is a technician?</h3>
This is a person who has skill in a particular area of job. A technician is responsible for repairs and also ensure different equipment and systems are working perfectly.
Hence, the technician should start by checking the temperature rise across the indoor coil.
Learn more about technician here : brainly.com/question/13315405
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Hydraulic radius is caused by pressurized hydrogen air so that should mean the answer is hydraulic radius