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Technician A says that you don’t need to use an exhaust extraction system when working on vehicles equipped with a catalytic converter. Technician B says that carbon monoxide effectively asphyxiates a person. Who is correct?

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Answer:

Technician B

Explanation:

When working on vehicles which are equipped with a catalytic coverter, the best practice of asphyxiating someone is to use carbon monoxide. This implies that you need an extraction sytem. Therefore, technician A is wrong by assuming no need of the system. In conclusion, technician B is correct.