When a filter rack return grill is located in the living space, why is it a good idea to make the return duct as large as possible?
What will be an ideal response?
The larger the duct, the slower the air speed; therefore, the noise level will be lower.
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Which type of insulation is produced by combining certain chemicals that react together in appropriate forms and releases a vaporous, bubbly product that takes the shape of the form?
a. formed fibrous b. blanket c. foam d. corrugated
A mobile crane’s center of gravity _____.
a. is always at the center of its rotation b. is always at the boom attachment point c. must remain to the operator’s back at all times d. moves as its configuration changes
A form of coordinated motion between a number of axis in a servo system is referred to as ____________________.
Fill in the blank(s) with the appropriate word(s).
____ for light frame construction are made of cast-in-place reinforced concrete.
A. Foundations B. Plumb lines C. Footings D. Crawl spaces