Download PASSEMALL Prep app now
or get instant
to install app
Your email address will not be published. Required fields are marked *
Save my name, email, and website in this browser for the next time I comment.
Which of the following heating method directly heats objects in the room, but does not directly warm the room air.
In heat pump, a _____ absorbs heat from the outdoor air and transfers it to indoor:
Mid-efficiency oil furnaces can have seasonal efficiencies of approximately ______:
A correct draft is essential for efficient burner operation
Fire tube boilers, systems are simple and easy to construct and are generally used in low-pressure applications:
The temperature at which wax crystals begin to form in oil is ______
Propane is ______ than air
______ reading refers to the draft within the chimney piping:
Replacing the conventional burner with a flame retention head burner will save _____ on the fuel:
Aluminum tubing or castiron fittings should be used for the main gas line.
LPG has a specific gravity of ______: