What is the possible consequence of cutting through a bonded roof to install a vent pipe?
A) Cutting through bonded roofing is safe because the roof is insured
B) The vent will not vent correctly when passing through a bonded roof
C) The HVACR contractor could ultimately be liable for any water damage resulting from leaks
D) An electrical short between the vent pipe and the bond on the roof
C
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Rats have ____________________ rows of scales on their tail than mice
Fill in the blank(s) with correct word
Two technicians are discussing oil filters. Technician A says that the oil will remain perfectly clean if just the oil filter is changed regularly. Technician B says that oil filters can filter particles smaller than the human eye can see. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
Stakes used for batter boards must be braced if they extend above ground level by _____
a. 2 feet or more b. 3 feet or more c. 4 feet or more d. 5 feet or more
________ create(s) a high-frequency vibration that can sometimes be detected as a high-pitched noise
A) Bent drive shafts B) Loose drive belts C) Mechanical looseness D) Worn or damaged bearings