An example of a pressure vessel is ____.
A. a small ship containing refrigerant cylinders
B. the compressor in a refrigeration unit
C. a cylinder containing refrigerant
D. a portable dolly
Answer: C
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A heat pump is an air-conditioning system that uses a reversing valve to reverse the refrigeration cycle in order to provide heating.
Answer the following statement true (T) or false (F)
Which phrase best describes the process of heating copper tubing to a temperature of 1300° F?
A) Hardening B) Slow heating C) Bending D) Annealing
If the tungsten electrode touches the filler metal during welding, the welder must _____
a. remove and clean the electrode b. discard the electrode c. increase the push angle d. touch the electrode to the weld puddle
Describe detail drawings.
What will be an ideal response?