The pressure-reducing valve is responsible for
A) controlling the hot-water circulator. B) adding makeup water to the boiler.
C) retrieving makeup water from the boiler. D) condensing water vapor.
Question 2
Heat from welding may:
A) Reduce corrosion resistance in stainless steels
B) Cause excessive distortion, rendering the welded part useless
C) Cause cracking in carbon steel
D) All of the above
