How is soot formed?

A) from an excessive over-fire draft B) from a clogged bypass plug
C) from a suction leak D) from incomplete combustion


D

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Elevator and stair shafts in building cores are often constructed by using a type of _____.

a. sliding form b. climbing form c. slip form d. jack-raised form

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What is the difference between a renewable and a nonrenewable energy source?

What will be an ideal response?

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Which of the following information is required on the label of a wire rope sling?

a. Steel alloy type
b. Rated load for at least one possible hitch and the angle on which it is based
c. Manufacturer contact information
d. Most recent periodic inspection date

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Helium is ____.

A. a by-product of the natural gas industry B. heavier than air C. much cheaper than argon D. used with alternating current

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