What wheel media is used in a rotary air-to-air heat exchanger that can recover total heat?
a. Aluminum
b. Copper
c. Zeolite
d. Monel®
c. Zeolite
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A ____ model is a three-dimensional (3D) model of the earth surface.
A. terrain B. grid C. contour D. spatial
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Reasons dog and cat owners acquire these pets include:
A. To have someone to play/communicate with B. For companionship/relationship C. To help children learn about pets and responsibility D. For security/protection/stability E. All of the above
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Why are drawings numbered? Why is this numbering so important?
What will be an ideal response?
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Why is nitrogen used to purge the system before using the flushing solvent?
A) Nitrogen will blow open the clogs. B) Nitrogen is more effective. C) Nitrogen is cheaper. D) The flush is activated by the presence of nitrogen.
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