In order to reduce the chances of indoor air contamination, __________appliances can be used, as they draw in outside air for combustion and exhaust the flue gasses directly back out.
What will be an ideal response?
sealed-combustion
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Describe surface mounting.
What will be an ideal response?
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Thru-beam sensing may be used over distances up to ____ feet.
A. 10 B. 100 C. 250 D. 700
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Does slope aspect refer to the degree of incline?
Indicate by YES (Y) or NO (N).
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Which of the following types of vehicle lamp is likely to function for the longest period?
A. incandescent B. halogen C. LED D. HID
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