The categories of opto-electronic devices include ____.

The rotary motion of shafts, gears, and pulleys is measured by ____ sensors.

In fluid power systems, friction is called ____.

What is the primary focus of public relations (PR)?

Fluid pumps convert the force of moving fluid into rotary motion using ____.

A transducer converts light, heat, or mechanical energy into ____.

Write a sentence using the following word: unskilled

Choose the best vocabulary word for the sentence:  Learning English is very _____________________, but it is worth the time and energy.

Choose the best vocabulary word for the sentence:  My brother didn’t have a ________________ job, so he had to move in with me.

Choose the best vocabulary word for the sentence:  In the southern part of the U.S., government __________________ (ed) people by race in the 1950s.