What is the average length of the five pieces shown, in inches?
ANS: 12.6
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Respiratory diseases are the most common health problems encountered in mice and rats
A. True B. False
To resist corrosion, the recuperative cell on a condensing oil furnace is made of:
A) Aluminized steel. B) High-quality stainless steel. C) Teflon-coated steel. D) Heavy galvanized steel.
What national standards organization publishes standard 31, a reference for installing oil furnaces?
A) NIST, National Institute of Standards and Technology B) NFPA, National Fire Protection Association C) NOFA, National Oil Furnace Manufacturers Association D) NICE, National Institute of Clean Energy
The two basic types of fans used in most air-handling units are:
A) Centrifugal and axial. B) Positive pressure and negative pressure. C) Reciprocating and orbital. D) Clockwise rotating and counterclockwise rotating.