Texas CDL General Knowledge Practice Exam

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Study for the Texas CDL General Knowledge Exam. Prepare with comprehensive questions and detailed explanations, empowering you to ace the test with confidence!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

During a pre-trip inspection, what should break grease be free of?

Dirt and debris
Oil and gas stains
Water and ice
Oil, grease, or brake fluid

The correct answer is: Oil, grease, or brake fluid

Break grease should be free of oil, grease, or brake fluid because these substances can affect the brake's performance and effectiveness. Dirt and debris can also cause issues, but they are not as harmful as oil, grease, or brake fluid. Oil and gas stains and water and ice should also be avoided, but they are not as critical for the safe operation of the brakes as oil, grease, or brake fluid. Therefore, D is the best and most complete answer.