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Practice quizzes / CDL Doubles Triples Practice Questions - CDL Doubles Triples Endorsement (T) Exam / Question 66910
Practice question

Why is it important to drain air tank moisture daily?

  1. To reduce vehicle weight
  2. To prevent water from freezing in cold weather and causing brake failure
  3. To make the brakes quieter
  4. To increase fuel economy

Answer: B — To prevent water from freezing in cold weather and causing brake failure

The correct answer is shown above. Try the full quiz for additional practice.

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