Washington's CDL Practice Test 4

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The rest of the axels on the vehicle are nearly the same as the front steer axels, with a few differences. What are the differences?

A. Torsion bar, space between the tires or spacers, and air bags

B. Tread depth, space between the tires or spacers, and air bags

C. Torsion bar, treads, space between the tires or spacers, and air bags

D. Torsion bar, treads, and air bags