What type of boiler consists of a shell and a series of steel tubes that transfer heat through a combustion chamber into the horizontal fire tubes?

a. Water tube boiler
b. Waste heat boiler
c. Fire tube boiler


a. Incorrect. Water tube boilers contain water-filled tubes that allow water to circulate through a heated firebox.
b. Incorrect. Waste heat boilers are devices that use excess heat from a process to produce steam.
c. Correct. Fire tube boilers are devices that pass hot combustion gases through the tubes to heat water on the shell side of the exchanger.

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Wounding cuttings can enhance rooting by: ________, ________, ________, and ________.

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

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If a CMU wall is vertically reinforced at 16 in. on centers, which of the following units will you recommend for use in the wall?

A) A-unit B) H-unit C) Bond beam unit D) Sash unit E) Standard unit with three webs

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Name the base of the foundation system used to displace the building loads over the soil.

What will be an ideal response?

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__________ are devices that, when in place, prevent the accidental energizing of equipment.

A. Lockout devices B. OSHA devices C. Tagout devices D. Warning devices

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