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Q. |
Which one of the following symptoms will not show that combustion is becessary complete. |
A. | Presence of free carbon in exhaust |
B. | Presence of carbon monoxide in exhaust |
C. | Presence of oxygen in exhaust |
D. | Presence of nitrogen in exhaust |
E. | All of the above |
Answer» D. Presence of nitrogen in exhaust |
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