Multiple Choice
Technician A says that oxygen sensors used by diesel engines adjust air-fuel ratios. Technician B says that oxygen sensors can be used to adjust the amount of EGR gas metered into the cylinders. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B
Correct Answer:

Verified
Correct Answer:
Verified
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