The ____ is the opening inside the chimney that allows smoke and combustion gases to pass from the firebox away from the structure.
A. damper
B. flue
C. chimney cap
D. chimney liner
Answer: B
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Which type of space heater must be turned on and operating when the space temperature falls below freezing?
A) Steam space heaters B) Electric space heaters C) Kerosene space heaters D) Gas space heaters
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After concrete is placed for footings, building corners must be marked on top of the footings. A ________ is commonly used to transfer to building corner down to the footing
A) Corner stake B) Plumb bob C) Transit-level D) Leveling rod
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The vertical axis line in an isometric sketch forms an angle of ____ with the horizontal base line.
A. 15° B. 30° C. 60° D. 90°
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