.Refrigerant characteristics shown on a pressure-enthalpy diagram include:
A) Valence, atomic number, and specific volume.
B) Pressure, heat, and temperature.
C) Molecular weight, specific heat factor, and density.
D) Molecular weight, valence, specific gravity, and atomic number.
Question 2
How can infrared light be used to detect refrigerant?
A) Refrigerant turns the infrared light blue.
B) Infrared sensors change resistance in the presence of refrigerant.
C) Infrared sensors interact with oxygen at different rates depending on the refrigerant exposure.
D) Most gasses absorb infrared light at a characteristic frequency.
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