210/470.
10.
What is a tractor protection valve?
A valve to keep air in the brake system should there be a bad leak
A valve that prevents the truck from being stolen
A valve that prevents the driver from going too fast
A valve that prevents the trailer from accidentally being released
1 210 CDL 209 A "" 0

Answer correctly : 0   |   Wrong : 0

Answer Sheet :

Refresh

Refresh this page and redo the question

Restart

Restart this set of tests