To meet fire safety code standards, piping systems run in a return air plenum must be _____.

a. noncombustible
b. made from PEX
c. made from CPVC
d. vapor sealed


a. noncombustible

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Most search engines allow for ____________________ logic searching and the inclusion or exclusion of information through the use of operators such as AND, NOT, and OR.

Fill in the blank(s) with the appropriate word(s).

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For fastening gypsum board to wood framing or furring, the preferred gypsum drywall screws are Type

_____. a. B b. W c. S d. G

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The public acceptance of hybrid technology can be largely credited to ____.

A. GM B. Ford C. Toyota D. Honda

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