Technician A says that sulfur dioxide emissions from diesel engines are much less of a problem today than they were back in 2006. Technician B says that diesel-sourced particulate matter (PM) smaller than the eye can see is capable of causing respiratory problems in humans. Who is correct?

Question

Quizplus · Accepted Answer

Technician A is correct because sulfur content in diesel fuel has been significantly reduced since 2006 due to regulations, leading to lower sulfur dioxide emissions. Technician B is correct because diesel particulate matter, especially those particles that are too small to see, can penetrate deep into the lungs and cause respiratory issues.

Technician a Says That Sulfur Dioxide Emissions from Diesel Engines