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Iowa CDL Practice Test: Tank - Test 5 2024

Instruction: To obtain this endorsement for hauling any liquid or gaseous materials in a tank or tanks, applicants must pass a 15-question test. And to pass the test, applicants must score at least 80%. Test questions are from the IA CDL Handbook. The Tanker Vehicles endorsement can be used with the Class A, B, or C CDL. If you need additional information, please contact your local DMV office. You can find your nearest DMV office at Iowa DOT locations.

2. What can cause a decrease in air pressure?
A
The emergency air hose tearing.
B
A trailer breaking loose.
C
A hose letting out air.
D
All of the listed answers
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