In commercial slab-on-grade structures, the top course of the foundation walls may serve as _____.

a. raceways
b. edge reinforcement
c. sills
d. edge forms


Answer: D

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Calculate the AQI for a city with a measured 1-hr nitrogen dioxide concentration of 0.267 mg/m3. What AQI-based level of health concerns should be reported?

What will be an ideal response?

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Most common heating devices, such as toasters, irons, and electric ranges, are heated by current in a coil of ____ alloy wire or ribbon.

a. copper b. silver c. chromium d. nickel-chromium

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Which of these has the lowest dielectric constant?

A) Paper B) Vacuum C) Mica D) None of these

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A vacuum pump removes _________________________ and _________________________ from a refrigeration system.

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

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