It is recommended that the air in a home be filtered at a rate of __________ changes per hour.

A. 1
B. 3
C. 6
D. 10


Answer: C

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A ____ shuts off the charging process, thereby preventing it from overcharging even if left on the charger for a long time.

a. battery charger–maintainer b. battery limiter c. battery maintainer d. battery charger

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The boiler system component that monitors water temperature and typically controls the burner of a standard boiler is _____.

a. the water level control b. a zone control c. the make-up water valve d. an aquastat

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In an attempt to avoid prosecution for their corrupt dealings, the owners of the Crédit Mobilizer

A. left the country. B. belatedly started to follow honest business practices. C. used shady bookkeeping to conceal their insider financial deals. D. tried to gain immunity by testifying before Congress. E. bribed key congressmen by giving them shares of the company's valuable stock.

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If weather conditions make it unsafe to drive a truck and the driver refuses to drive, he or she is not protected under STAA laws.

Answer the following statement true (T) or false (F)

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