Technician A says that an Audi? five-valve engine uses three intake valves and two exhaust valves. Technician B says that it uses three exhaust valves and two intake valves. Which technician is? correct?
A) Technician A only
B) Technician B only
C) Both technicians A and B
D) Neither technician A nor B
Ans: A) Technician A only
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Technician A says canister purging occurs only when conditions are right. Technician B says modern purge valves are computer controlled. Who is correct?
A. Technician A B. Technician B C. Both A and B D. Neither A nor B
A ____ plan is used to show the shape of the roof in orthographic projection.
A. framing B. roof C. shell D. top
What capacity control method is popular with open and semi-hermetic reciprocating compressors?
a. Slide valves b. Cylinder unloading c. Plug valves d. Throttling unloaders
The heat required for off-cycle defrost is obtained from ____.
A. supplemental electric heat when the system is shut down B. hot gas when the system is operating C. the space temperature when the compressor is off D. hot liquid from the compressor