Multi-stage thermostats provide energy savings by cycling on stages of heating or cooling based on _____.
a. demand
b. pump size
c. preset timers
d. time delay relays
a. demand
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Low-voltage power circuit breakers commonly have ____ set(s) of contacts.
A. one B. two C. three D. four
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Which of the following can cause damage to the pump?
A. Overfilling B. Overpressurization C. Misalignment of pump systems D. Misalignment of blanket systems
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Balanced port TXVs are used to ____ ambient temperatures.
A. feed refrigerant at a normal rate with low B. feed refrigerant at a normal rate with high C. stop refrigerant flow with high D. stop refrigerant flow with low
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The process of ____________________ involves severing the bark and cambium of a tree, stopping the flow of water and nutrients to it, and killing it
Fill in the blank(s) with correct word
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