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    Advanced Engine Performance Diagnosis
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    Exam 27: Emission Control Devices Operation and Diagnosis
  5. Question
    Smog Contains ________, Which Is an Irritant to Lungs and Eyes
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Smog Contains ________, Which Is an Irritant to Lungs and Eyes

Question 20

Question 20

Multiple Choice

Smog contains ________, which is an irritant to lungs and eyes.


A) CO2
B) N2
C) O3
D) O2

Correct Answer:

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