To control ice build-up on a heat pump outdoor coil in the heating cycle, a ____ is attached to a large diaphragm.

A. toggle switch
B. micro-switch
C. push button switch
D. sail switch


Answer: B

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What three things are required for combustion to take place?

What will be an ideal response?

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Las formas de espuma de poliestireno se usan general- mente en la construcción _____.

a. residencial y de comer- cios livianos b. premoldeadas c. de puentes d. de estacionamientos cubiertos

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In a conventional gas furnace, the hot flue gases are ____.

A. forced out a PVC vent with a blower B. recycled through a secondary heat exchanger and then vented through a draft diverter C. forced through a type B vent by a blower D. vented by natural convection

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When a state or federal inspector stops a CMV on the roadside or at a weigh station and finds that the vehicle is unsafe in any area, the inspector can

A. demand that the problem be repaired immediately B. issue a citation that requires the problem to be repaired within 30 days C. put the vehicle out of service D. all of the above

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