How is the airflow adjusted on most commercial air handlers?
A) By adjusting the pitch of the blades on the blower wheel
B) By increasing or decreasing the voltage to the fan motor
C) By moving the speed tap on the blower motor
D) By adjusting the sheave on an adjustable pulley
D
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What will be an ideal response?
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Which type of line chart is used to compare several sets of data?
A. grouped line chart B. multiple line chart C. paired line chart D. deviation line chart
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Which of these are believed to be the first animals domesticated?
A) rabbits B) ferrets C) cats D) dogs
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Sparks from a cutting operation can travel at least _____
a. 20 feet b. 30 feet c. 40 feet d. 50 feet
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