A chemical device used to store electrical power is known as a ____.
a. capacitor
b. diode
c. relay
d. battery
d. battery
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A ventilation problem may exist when the carbon dioxide level in a room exceeds how many parts per million (ppm)?
a. 500 b. 600 c. 800 d. 1,000
Condensing units located outside that are required to operate year-round must have ____.
A. larger fan motors B. CPR valves C. all weather protection D. head pressure control
The first indication to the vehicle operator that a problem is present in the ESP or the rollover mitigation system is ________.
A. the illumination of the warning light B. the signaling of a chime C. understeer D. oversteer
When would a fire damper be used?
A) In a partition B) Anytime supply or return ducts must pass through a firewall C) Anywhere rooftop air conditioners are installed D) If a building is deemed "green"