Name the three most commonly used breeds of guide dogs
What will be an ideal response?
German shepherds, Labradors, and retrievers
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Name the primary difference between a pump and a compressor.
a. Compressors use steam turbines vs. electric motors b. Pumps transfer fluids, compressors transfer gases. c. Pumps are smaller than compressors. d. Compressors transfer gases, pumps transfer liquids.
Package boilers were developed in order to _____.
a. reduce the price of boilers b. use alternative sources of fuel c. allow small facilities to generate their own power and steam d. protect the environment
Molten solder flows between the two base metals being soldered because ____.
A. the atmospheric pressure pushes it in B. of capillary attraction C. there are no surface pores in the base metal D. the tubing surface melts and the pressure differential forces it in
A circuit has a current source of 200 mA and an internal resistance (RS) of 200 k?. The load resistance (RL) is changed from 2 k? to 4 k?. The change in load current is
A) 2 mA B) 198 mA C) 1 mA D) 196 mA