Ceiling diffusers are one of the best air delivery methods for _____.

a. high-efficiency filtration
b. dehumidification
c. heating
d. cooling


d. cooling

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Determine the maximum possible efficiency of the heat engine sketched in the figure.


A) 75%
B) 72%
C) 68%
D) 63%

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In a technical report, all figures must be numbered and have a descriptive title.

a. True b. False

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Zeotropes are mixtures of two or more refrigerants:

A) That separate when changing state. B) That are chemically bonded to form a new refrigerant. C) That are electromagnetically bonded to form a new refrigerant. D) That do not separate when changing state.

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In the Northern Hemisphere, the winter sun is _____ in the sky, and its light is almost entirely from the _____ .

A. high; north of the east-west line B. relatively high; south C. low; north of the east-west line D. relatively low; south

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