When a ventilated ridge is used, there are no openings in the roof decking.
Answer the following statement true (T) or false (F)
False
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Name and describe the function of each of the four divisions of the NAHB Research Foundation.
What will be an ideal response?
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When do positive shut-off fittings reduce refrigerant loss?
A) When fixing broken hoses B) Only when disconnecting hoses C) Only when connecting hoses D) When connecting and disconnecting hoses
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Carbon monoxide is difficult to detect because it _____
A) smells subtly pleasant B) collects in unlikely places C) desensitizes the sense of smell D) is odorless
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Many things can go wrong with an air compressor, one of which is the same problem that may be encountered with hydraulic pumps. This is ____.
A. entrained air B. bearing failure C. worn cylinder walls D. vane wear
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