Please help! timed test. This about electrical control. Please be serious.

Which of the following is an easy way to remember the modified “x” tire rotation? a. nondrive wheels straight, cross the drive wheels b. drive wheels straight, cross the nondrive wheels c. drive wheels crossed, nondrive wheels straight d. drive wheels crossed, nondrive wheels crossed

Wiy doeres rere okhn a pump whon working betwon the same pressure range?

The sum of the normal stresses does not change as the stress state rotates through an angle. a)-trune b)- false