The evaporative system reduces:

A. Hydrocarbons
B. Carbon monoxide
C. Carbon dioxide
D. Oxides of nitrogen


Answer: A

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Most AC ammeters use ____ to change scale values.

a. shunts b. a Hall generator c. a voltmeter d. a current transformer

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Obtain the Fourier transforms of the signals shown in Fig. 18.35.

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When a valve is selected that is sized too large, the controller of the closed-loop system will cause it to operate at or near the ____ position.

A. open B. closed

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Which statement about the operation of HVAC equipment during fire ventilation operations is correct?

a. HVAC systems should be shut down as soon as possible b. it is important to maintain power to the HVAC system at all times c. HVAC systems are designed to automatically shut down when smoke is detected d. some HVAC systems incorporate features that are useful for clearing smoke

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