As an operational safety check, the equipment rooms for combustion appliances should be checked for high:
A) Carbon dioxide levels. B) Nitrogen levels.
C) Carbon monoxide levels. D) Oxygen levels.
C
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When multiple rooftop units are used to condition the air in a building, it is common practice to label the units and their corresponding ____________________.
Fill in the blank(s) with the appropriate word(s).
Floor jack use is being discussed. Technician A says the floor jack lift pad should be positioned under the radiator support when lifting the front of the vehicle. Technician B says after raising the vehicle, the floor jack should be left supporting the vehicle with the jack handle in the downward position. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
A stick of length 1 is broken at a point chosen uniformly along its length. One piece is used as the length of a rectangle, and the other is used as the width. Find the mean area of a rectangle formed in this way.
What will be an ideal response?
Which of the following is an incorrect statement regarding the venting of a condensing furnace?
a. The intake and exhaust vents should be close together. b. The diameter of the vent pipe is based on the furnace input, the length of the vent, and the number of elbows. c. Installation guidelines for Category IV furnaces should be followed.