Large rooftop package AC units often use ________ to help draw in fresh air to meet code requirements and to cool if temperature and humidity permit
A) low pressure B) airflow C) enthalpy D) an economizer
D
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In the diagram below, what is the perimater of polygon EFGH?
Fill in the blank(s) with the appropriate word(s).
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When two gears are in mesh, the larger is called the pinion and the smaller is called the gear.
Answer the following statement true (T) or false (F)
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The U.S Green Building Council has developed nationally recognized standards for the design, construction and operation of new and existing buildings. These standards are known by the acronym ____________.