2025 Washington Cdl Class A Knowledge Test - 1
The following questions are from real Washington CDL practice tests. After selecting the answer, you can see the explanation. After confirming, click "Next" to jump to the next question.
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1. Poisonous fumes can enter a cab due to:
A defective exhaust system.
Using the wrong type of fuel.
A lack of oil in the engine.
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Key Data
Number of Tests: 18
Number of Question: 50
Passing Score: 40
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