The refrigerant in an absorption chiller is:
A) HFC 134a. B) HCFC 123. C) Water. D) Lithium bromide.
C
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Referring to the following figure, the blower motor does not operate in High speed but operates correctly in Low or Med speeds. What could be the cause?
A. Defective resistor block B. Shorted to ground circuit A77F C. Defective blower switch D. All of the above could cause this problem.
Special wedge-shaped units called ______ are manufactured to specifically to create the curvature in arches.
A. lintels B. rowlocks C. soldiers D. voussoirs
A building is said to have sick-building syndrome when more than what percent of its occupants complain during a two-week period of symptoms that are alleviated when the occupants leave the building?
a. 20 percent b. 25 percent c. 50 percent d. 80 percent
The ____ produces pamphlets that inform hunters of bag limits
a. Department of Health and Human Services b. National Parks Service c. Department of Natural Resources d. Environmental Protection Agency