Holding up a football to demonstrate the proper way to hold a football is an example of using a(n) _____ as part of visual communication
a. smart board
b. video
c. flier
d. object
D
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Which category of appliances are nonpositive vent static pressure with a vent gas temperature that can cause excessive condensate production in the vent?
a. Category I b. Category II c. Category III d. Category IV
The most common method of cooling standby generator sets is _____.
a. a mounted radiator with an engine-driven fan b. liquid-to-liquid heat exchangers c. battery-powered systems d. compressed air systems
To speed up refrigerant recovery:
A) Recover from only one side of the system at a time. B) Use large-diameter, short-length hoses. C) Use small-diameter, long-length hoses. D) Keep the system as cool as possible.
The standard deviation is
a. the square root of the variance. b. the square of the variance. c. the root mean squared of the variance. d. the absolute value of the variance.