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Unofficial Boating Safety Practice (Not an Exam)
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What is the primary purpose of a 'muffler' on a gasoline-powered marine engine?
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50-50
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Audience
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A
To reduce the noise of the engine exhaust to prevent operator fatigue and hearing loss
B
To prevent water from entering the cylinders through the exhaust manifold
C
To filter out harmful particulate emissions before they enter the water
D
To regulate the flow of fuel-to-air mixture in the carburetor
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