The screw compressor is used primarily in ____.
A. large commercial and industrial systems
B. residential air conditioning
C. small commercial refrigeration units
D. domestic refrigerators
Answer: A
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Site access should be limited to authorized persons _____.
a. only at night b. during work c. all of the time d. during the day
In the course of the late 19th century
A. the birthrate increased. B. the divorce rate fell. C. family size gradually declined. D. people tended to marry at an earlier age. E. children were seen as a greater economic asset.
When installing a receptacle for a cord-and-plug connected appliance, the receptacle must be located no more than __________ feet from the appliance.
a. 2 b. 5 c. 6 d. 8
The change in the sample voltage over the hold interval is called
A) attenuation B) drop-out voltage C) droop D) insertion loss