What are some of the advantages of an air to water heat pump system?
What will be an ideal response?
• There is little to no effect on the warm air temperature being supplied to the building when the outdoor coil enters the defrost mode because the heat for defrost comes from the buffer tank, not the building.
• The electric heat is not required to come on during the defrost mode.
• The air-to-water system will generally operate with higher efficiencies at lower outdoor temperatures as compared to air-to-air systems.
• Can be used with hydronic heating systems.
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Behavioral problems in dogs and/or cats include
A. Inappropriate elimination B. Aggression and chewing on forbidden objects C. Car chasing D. Excessive barking/meowing E. All of the above
Technician A says that analog scopes use an LCD display. Technician B says that digital scopes may use a CRT display. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
Why must heat from braking be dissipated?
What will be an ideal response?
Slip-fit bearings are often installed _____
A) by hand B) using heat and pressure C) with a hydraulic press D) with an arbor press