Technician A says that OEMs permit some repairs to be made to low bus wiring. Technician B says that when a bus twisted wire pair is protected with foil, you can assume that it is categorized as low bus. Who is correct?

A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A nor B


Answer: A

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The most common refrigerant used in newly manufactured room air conditioners is ____.

A. R-12 B. R-22 C. R-500 D. R-410A

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The soil and a soil are two extremes in the concept of soils that is basic to most classification schemes

Indicate whether the statement is true or false

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Technician A says that volumetric efficiency is a comparison of the actual volume of air-fuel mixture drawn into the engine to the theoretical minimum volume that can be drawn into the cylinder. Technician B says that a supercharger consumes some engine power as it forces a greater amount of air into the cylinders for more power. Who is right?

A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B

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After the engine block has been machined, it should be cleaned using ________

A) Sprayed with WD-40 B) SAE 10W-30 oil and a shop cloth C) Sprayed with brake cleaner to remove the cutting oil D) Soap and water

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