What regulates the draft through the heat exchanger and prevents downdrafts from blowing into the heat exchanger on natural-draft gas furnaces?
A) The induced draft blower B) The barometric damper
C) The draft regulator D) The draft diverter
D
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While discussing parts retailers, Technician A says that chain stores usually deal in faster moving items such as alternators, starters, tools, and car accessories. Technician B says that they often do not have as large an inventory of diverse parts as a jobber store. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
The stringer, or stair jack, is the support for the treads.
Answer the following statement true (T) or false (F)
A fast-running saw with an appropriate blade is needed to cut metal
Indicate whether the statement is true or false.
The 2009 IECC requires a minimum of ____ in each house.
A. one clock setback thermostat B. two clock setback thermostats C. one standard thermostat D. two standard thermostats