For the majority of air -conditioning and heating jobs, ductwork is not included as part of the installation.
Answer the following statement true (T) or false (F)
False
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Technician A cleans the valve body in carburetor cleaner, rinses it with water, and blow dries it with compressed air. Technician B says valves that are dragging in their bores should have the bores cleaned by a brake hone in an electric drill. Who is correct?
A. A only C. Both A and B B. B only D. Neither A nor B
Technician A says that when fuel is being dosed to a DPF, the unit is being passively regenerated. Technician B says that when fuel is being dosed to a DPF, the unit is being actively regenerated. Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B
Generally speaking, electric heat is very efficient but can be more expensive to operate compared to oil and gas.
Answer the following statement true (T) or false (F)
A(n) ________ may be a braided mesh of wires or a thin metal jacket resembling aluminum foil that surrounds the conductors, and its purpose is to insulate conductors from outside electrical forces
Fill in the blank(s) with correct word