Pollutants that require lab testing for positive identification include:
A) Pollen, tobacco smoke, and fiberglass. B) Asbestos, radon, and mold.
C) Atmospheric dust, pollen, and asbestos. D) All types of pollutants require lab testing.
B
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When installing a surface-mounted fixture weighing more than 50 pounds, it _____.
a. must always be supported independently of the outlet box b. can be supported by the outlet box if the box is designed and marked to support more than 50 pounds c. can be supported by a standard outlet box without additional support d. may be secured to a standard outlet box if securely attached
Weeds are not infectious, so how do they injure landscape plants?
What will be an ideal response?
Technician A says that disc brake pads should be replaced when worn to minimal allowable thickness
Technician B says the pads should be removed and inspected whenever there is a brake performance complaint. Which technician is correct? A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
What is the pressure in psi required to lift water 20 feet?
A) 14.7 psi—just enough to overcome atmospheric pressure B) (20 ft × 0.433 lb/ft) 144 in2/ft2 = 0.06 psi C) 20 ft × 0.433 lb/ft = 8.66 psi D) It is not possible to determine the pressure without knowing the cross sectional area of the pipe.