Walls generally average about ___ psf.

A. 5 lb
B. 10 lb
C. 25 lb
D. 50 lb


Answer: B

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When different kinds of atoms combine chemically, they form materials called ____.

a. lattices b. molecule c. element d. compound

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The higher the sales to employee ratio, the more successful the company.

Answer the following statement true (T) or false (F)

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What is the proper growing environment for "hothouse" vegetables?

a. warm and dark house c. controlled greenhouse b. summer months indoors d. unshaded river deltas

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An optional item of equipment used to recover about 60 to 80 percent of the energy contained in the air

exiting a system and to deliver the energy to the incoming air is a(n) _____. a. ERV/HRV b. evaporative pre-cooler c. bypass humidifier d. economizer

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