An advantage of a warm air electric furnace compared to an oil or gas furnace is
A) Lower operating cost in most parts of the country
B) Warmer supply air temperatures
C) No vent pipes, chimney, or makeup air are required
D) Lower power requirements
C
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Insulation is of little value in modern farm building construction.
Answer the following statement true (T) or false (F)
Technician A says to use a die grinder and a fine abrasive pad to polish the surface of a valve. Technician B says to use a fine emery cloth when removing a scratch from a valve. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
Excessive debris at the bottom of the water garden is of no concern as long as the water is at least 2 feet deep and the debris is organic
Indicate whether the statement is true or false
What element is used to produce the electricity in fuel cells?
A. oxygen B. hydrogen C. carbon D. nitrogen