Which terminal controls second-stage heat on most heat pumps?
A) G terminal B) O/B terminal C) Y terminal D) W terminal
D
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The U.S. Department of Energy's climate zones are based on
A) the exterior humidity. B) the exterior air temperature. C) precipitation. D) A and B. E) B and C.
Two species of mycoplasma cause _____ in hogs
a. arthritis c. erysipelas b. cholera d. streptococcus
How do piercing pliers differ from braze-on piercing valves with regard to how they are used on sealed systems?
A) Piercing pliers have a greater danger of causing overheating. B) Piercing pliers cannot be a permanent solution. C) Piercing pliers require a bolted valve. D) Piercing pliers cannot be used to recover refrigerant.
The polarity of a tachometer output signal indicates the direction the device it measures is turning.
Answer the following statement true (T) or false (F)