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Question
What kind of brakes do most newer heavy-duty trucks use?
Answers
A.  Single air brakes
B.  Dual air brakes
C.  Triple air brakes
Explanation
Most newer heavy-duty vehicles use dual air brake systems. A dual air brake system has two separate air brake systems which use a single set of brake controls.
Answer Statistics
6.27 % of our users get this question wrong.
This question's difficulty is Medium

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