Fittings for copper tubing are available in either wrought copper or ____.
a. stainless steel
b. PEX
c. tempered rubber
d. cast brass
d. cast brass
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A board nailed to the tails of the rafters to provide a nailing surface for the fascia is the _____.
a. purlin b. barge board c. false fascia d. lookout
Which type of duct undergoes more rigorous testing before it is labeled?
A) Polycarbonate molded duct B) Galvanized sheet metal duct C) Flexible duct D) Flexible duct connector
______________ is simply air pressure below atmospheric pressure.
Fill in the blank(s) with the appropriate word(s).
What is the main difference between a heat pump and a fossil fuel furnace?
A) Heat pumps move heat instead of creating it. B) Fossil fuel furnaces have been around longer. C) Fossil fuel furnaces are hotter. D) Heat pumps are easier to install.