When fully loaded with personnel, tools, and material, the wood plank used to make a scaffold platform must never deflect more than 1/60th of its ____.
a.span
b.height
c.width
d.cribbing length
ANS: A
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____ is functionally similar to job rotation, but only involves the rotation of a portion of a job, rather than the entire position.
A. Vertical job rotation B. Task rotation C. Computer training D. Horizontal job rotation
_________________________ on an isometric drawing are parallel or perpendicular to the front, top, or profile viewing planes.
Fill in the blank(s) with the appropriate word(s).
The A7 test includes what subject material?
A) Engine repair B) Electrical systems C) Heating and air conditioning D) Engine performance
What efficiency advantage do water-source heat pump systems have over air-source heat pump systems?
A) Water is a more efficient heat-transfer medium, and water temperatures are moderated by the earth. B) It takes less horsepower to pump water than air. C) Heat has more affinity for water than air. D) Water is a more efficient refrigerant than either R-22 or R-410A.