What effect on the building pressure does a heat recovery ventilator have?
A) It decreases building pressure.
B) It increases building pressure.
C) No effect—it is a balanced system.
D) It increases building pressure on one side and decreases it on the other side.
C
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The supply circuit's calculated load for lighting units that have ballasts or transformers is based on the ____, not on the lamps' total wattage.
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What is the tooth spacing in inches of a 16 pitch saw blade?
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