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Practice quizzes / Michigan CDL Doubles Triples Practice Questions - Michigan CDL Doubles and Triples Endorsement Test Exam / Question 127206
Practice question

What should be true of the converter dolly air tank drain valve before moving?

  1. It is closed
  2. It is open to vent continuously
  3. It is removed
  4. It is used as an electrical socket

Answer: A — It is closed

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

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