The main function of an air conditioning duct system is

The main function of an air conditioning duct system is



a) to only transmit return air from the space to be conditioned
b) to only transmit supply air from the air handling apparatus
c) to only transmit air to the refrigeration compressor
d) to transmit supply and return air between the air handling apparatus and the space to be conditioned
e) to transmit air from the refrigeration compressor to the condenser


Answer: D


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