Why are communicating systems increasing in popularity?
A) They improve system efficiency and convenience.
B) They raise the cost of equipment and increase service calls.
C) They can be used to replace a land-line telephone system.
D) They can serve as a router for a wireless home entertainment system.
Question 2
How is the ice removed from the vertical evaporator plate after it reaches the proper thickness?
A) The compressor continues to operate and a hot gas solenoid sends hot discharge gas to the evaporator.
B) The compressor turns off and the sweeper pushes the cubes out.
C) The compressor continues to operate and a reversing valve switches the evaporator and condenser.
D) The compressor turns off and the mold heater is energized.