Which statement about gas-fired infrared heaters is correct?
a. A reverberator is used to reduce carbon monoxide emissions.
b. Low-intensity heaters use submerged-flame burners.
c. Safety devices are similar to those used in induced-draft gas furnaces.
d. Gas-fired infrared heaters cannot be used in garages.
c. Safety devices are similar to those used in induced-draft gas furnaces.
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The mixed angular gravel, rock, and soil found at the foot of a slope is typical of what type of parent material?
A) glacial B) fluvial C) eolian D) colluvial E) lacustrine
When a driver applies the brakes too hard, downshifts too much, or suddenly slows down, _____ can occur.
A. wheel lockup B. a tire slide C. a power skid D. spinning wheels
Name the type of drawing that is normally created at an angle other than 45°, and the scale on the receding axis is also different from those used in cavalier and cabinet drawings. The most common angles for a general oblique drawing are 30°, 45°, and 60°, but any angle can be used. Any scale from half to full size can be used.
What will be an ideal response?
When leak testing a low-pressure chiller, the pressure should not be allowed to exceed 10 psig to avoid:
A) High compressor current draw. B) Opening the high-pressure cutout and shutting the system down. C) Freezing the chiller bundle. D) Breaking the rupture disk and losing the refrigerant charge.