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To avoid carbon monoxide poisoning, drivers should:
A.  Have their exhaust system checked regularly to be sure it does not leak.
B.  Keep their engine turned off when the car is in an enclosed garage.
C.  Close vents when following closely behind another car.
D.  All of the above.
Carbon monoxide fumes are odorless and deadly. Symptoms of carbon monoxide poisoning are sudden weariness, yawning, dizziness, and nausea. The only cure is an adequate supply of fresh air.
Answer Statistics
13.06 % of our users get this question wrong.
This question's difficulty is Medium

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