Question id 201 - Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot license

P: Warms Up Engine Bleed Air S: Increases The Temperature Of Air Originating From The Compressor Of The Pack.
P: warms up engine bleed air S: recirculates the cabin air, reducing its temperature
P: pre-cools the engine bleed air S: increases the temperature of the air used for air-conditioning of cargo compartment (animals)
.p: precools the engine bleed air S: reduces the temperature of the air from the primary exchanger or from the pack's compressor