_____ is a form of energy not derived from sunlight.
A. ?Biomass fuel
B. ?Fossil fuel?
C. ?Wind energy?
D. ?Tidal energy
Answer: D
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____________________ is accomplished by connecting resistors in series with the motor during the starting period.
Fill in the blank(s) with the appropriate word(s).
When copper is being brazed to steel _____.
a. the technique is identical to brazing copper to copper b. more heat is applied to the steel fitting c. a filler metal with a high phosphorus content is best d. a filler metal with a high silver content is used
Technician A says the lower the bin number is, the cleaner. Technician B says that SULEV has cleaner standards than ULEV. Which technician is correct?
A) Technician A B) Technician B C) Both technicians D) Neither technician
In residential applications, black iron pipe is used _____
a. for refrigerant piping b. to supply gas to a furnace c. as condensate piping d. to supply combustion air