Which class of manufactured duct has the lowest flame spread and smoke developed ratings?

A) Ductwork does not burn. B) Class 0
C) Class 2 D) Class 1


B

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According to TROT, what is the standard evaporator superheat for a medium temperature walk-in?

a. 2° b. 10° c. 22° d. 30°

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In the ionizing section of an electronic air cleaner, the particles in the air are ______________________________.

Fill in the blank(s) with the appropriate word(s).

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If what is known as a standard 18-wheeler has its duals replaced by wide-base singles throughout the rig, what would be the total number of tires? 

A. Ten B. Twelve C. Fourteen D. Sixteen

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A multi-detail is a print that shows one print of a section of a complex part.

Answer the following statement true (T) or false (F)

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