Windshield wiper blades are constructed of ________ and tend to become brittle due to age
A) Rubber B) Brushes C) Cork D) Nylon
A
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Describe how an X-10 socket module is used.
What will be an ideal response?
What is the purpose of using an outdoor ambient thermostat on a heat pump installation?
A) To cycle the heat pump based on the outside temperature instead of the inside temperature B) To bring the heat pump on early if the temperature drops C) To prevent the heat pump from operating in heat unless it is cold outside D) To prevent the auxiliary heat from operating above the system balance point
What is the purpose of the guard interval?
A. help prevent overlapping channel interference B. help prevent co-channel interference C. helps prevent outside EM interference D. helps prevent intersymbol interference
A high temperature rise across a furnace heat exchanger may cause _____.
a. condensation in the vent b. higher flue gas temperatures c. carbon monoxide formation d. lower flue gas temperatures