Question 7 (3 points) Temperature below the boiling point is considered 00 Superheat Subcooling Supergas Subheating Question 8 (3 points) P-Traps at the end of the evaporator are mainly used for To prevent interference with TXV operation and as an oil lift To prevent flood back To prevent oil migration To prevent liquid slug back Question 9 (3 points) Liquid refrigerant will cause injury by Frost bite Displacement of oxygen All answers are correct Phosgene gas when exposed to a flame