An electric heating unit that utilizes ductwork to distribute the heated air is classified as a ____.
A. natural-convection heater
B. forced-convection heater
C. forced-draft conductor
D. radiant heater
Answer: B
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Three kinds of somatic variants within clones are identified as ________, ________, ________.
Fill in the blank(s) with the appropriate word(s).
A flammable liquid's ____________________ is the temperature at which the vapors will ignite when brought into contact with an open flame.
Fill in the blank(s) with the appropriate word(s).
Small engines require an outside source of power
Indicate whether the statement is true or false
Green homes should aim for ____ ENERGY STAR or 2009 IECC in cold climates.
A. significantly lower U-factors than B. significantly higher U-factors than C. the same U-factors as D. slightly higher U-factors than