Author Question: Some manufacturers recommend a ________ hour standing pressure test before evacuation. A) 24 B) 6 ... (Read 989 times)

mspears3 · **on:** Jul 24, 2018

Some manufacturers recommend a ________ hour standing pressure test before evacuation.

A) 24 B) 6 C) 2 D) 12

Question 2

The two most common pollutant pathways are:

A) Through leaky return air ducts and building infiltration.
B) Outside to inside and from one area inside to another area inside.
C) Through ventilation ducts and building infiltration.
D) From equipment surfaces and through infiltration.