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Which of the Following Statements Is LEAST-Likely True

Question 17

Multiple Choice

Which of the following statements is LEAST-Likely true?


A) NOX is formed when nitrogen and O2 combine in the combustion chamber at sustained high temperatures in excess of 2,500°F.
B) When NOX is combined with HCs in the presence of sunlight, smog is formed.
C) Deposits are more common on engines with low mileage.
D) A lean air-fuel ratio can increase NOX when it causes preignition.

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