To allow two pieces of copper tubing to be joined by soldering or brazing without any fitting, which of the following must be used?
A) Solder end B) Swage joint C) Sweat tree D) Fitting end
Question 2
ACR copper tubing is:
A) Copper tubing with added metallurgical alloys that resist corrosion from the refrigerant.
B) Type L, dehydrated copper tubing.
C) Type M, dehydrated copper tubing.
D) Any type of copper tubing so long as it has been dehydrated.