The new BAC (blood alcohol concentration) for commercial drivers to be considered intoxicated when driving a commercial vehicle is:
a. 0.08
b. 0.02
c. 0.04
Answer: c. 0.04
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An automated building management system communicates directly with the building's _____
a. HVAC contractor and occupants b. air handling and VAV systems c. humidifiers and dehumidifiers d. UVC and MERV systems
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The "whiskers" on a catfish are called ____________________
Fill in the blank(s) with correct word
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In a typical concrete mix, 10 to 15 percent of the volume is _____
a. water b. aggregate c. admixtures d. portland cement
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The ____ fitting is designed to handle pressure fluctuations that occur when falling water suddenly turns horizontal.
A. relief line B. deaerator C. vent stack D. trap
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