How can the effectiveness of evaporative cooling be increased?
A) By using warmer air B) By adding humidity
C) By using multiple stages D) By mixing product and working air
C
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A joint between two walls has been determined to be 0.5 in. if the joint is not to be filled with a sealant. If the same joint is to be filled with a class 50 sealant, its width should be
A) 1/4 in. maximum. B) 2-1/2 in. minimum. C) 1 in. minimum. D) 1/4 in. minimum. E) none of the above.
What is the correct spacing for the mechanical fasteners used to hold duct liner in place?
What will be an ideal response?
This sign indicates (yellow diamond shape with a cross in the middle):
a. A side road b. A cross road c. A church zone ahead
A water regulating valve helps to maintain a system's head pressure by modulating the flow of refrigerant through the condenser.
Answer the following statement true (T) or false (F)