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Iowa CDL Practice Test: Tank and Hazmat - Test 2020

(From the 2020 Iowa CDL Handbook)
Number of tests: 1
Number of questions: 30
Passing score: 80

Directions: If you need additional information, please contact your local DMV office. You can find your nearest DMV office at Iowa DMV locations.

1. A tank trailer with baffles helps to control ________.

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