If an induced-draft gas burner produces a flame that is completely blue, or blue with tiny yellow tips, it is an
indicator of _____.
a. incomplete combustion
b. normal operation
c. too much primary air
d. too much secondary air
b
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The rough opening dimensions are usually given on the drawings.
Answer the following statement true (T) or false (F)
The following statements are all correct EXCEPT _________
A) Used tires produce a heavy smoke when burned. B) Used tires are difficult to dispose of in a landfill because they tend to rise to the surface. C) Used tires can be breeding grounds for mosquitoes that carry disease. D) All of the statements are correct
The reference point that is established and recorded by a registered licensed surveyor is called a _____
a. locus b. landmark c. benchmark d. contour
Which of the following is NOT generally thought of as a concept related to heat stress?
A) Heat cramps B) Threshold limit values C) Work tolerance time D) Moisture vapor transfer rate