As a rule of thumb, _____ screws are required per 1,000 square feet of wallboard to install single-layer
drywall on 16" OC studs.
a. 800
b. 1,000
c. 1,200
d. 1,500
b
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The bottom of a cylindrical container has an area of 10 cm2. The container is filled to a height whose mean is 5 cm, and whose standard deviation is 0.1 cm. Let V denote the volume of fluid in the container.
a. Find 
.
b. Find 
.
Caustic chemicals can be used to ________ the effect of acidic chemicals
A) Decrease B) Neutralize C) Increase D) None of these
A Bourdon tube is:
A) An evacuated tube that vibrates in the presence of pressure. B) A flattened tube in the shape of a question mark that straightens under pressure. C) A straight, round tube that deforms under pressure. D) A straight twisted tube that untwists with an increase in pressure.
The HVACR technician's role in indoor air quality is to:
A) Perform laboratory tests on collected material. B) Install HEPA filters to alleviate all indoor air-quality concerns. C) Communicate with the building owner and the occupants on how the interacting systems of a building affect indoor air quality. D) Perform microscopic analysis to determine the origin of pollutants.