Refrigeration oils must be miscible with the system refrigerant because:
A) The system depends on the refrigerant to carry the oil throughout the system to lubricate all the refrigeration components.
B) The compressor cannot operate properly without liquid refrigerant in the crankcase.
C) The system depends on the refrigerant to return the oil to the compressor.
D) The system depends on the oil to return the refrigerant to the compressor.
Question 2
Automatic expansion valves are similar in operating concept to:
A) Manual valves. B) Electronic expansion valves.
C) Fixed restrictions. D) Pressure regulators.
The autonomic nervous system with its sympathetic and parasympathetic divisions
Write-It-Once System
Organization of the nervous system.
Paranasal sinuses are part of the upper respiratory system. From here, infections may spread via the ...
The urinary system.
Autonomic innervation of the female reproductive system