The heaters located near the refrigerator door to keep the cabinet from sweating are called the ____ heaters.
A. defrost cycle
B. mullion or panel
C. condensate
D. re-cycle
Answer: B
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Hydrogen is burned with 140% excess air. The air-fuel ratio is nearest:
A) 27 kgair /kgfuel B) 36 kgair /kgfuel C) 43 kgair /kgfuel D) 48 kgair /kgfuel
No matter how large or complicated the welded structure, it is assembled ____ piece(s) at a time.
A. one B. two C. three D. four
On a system equipped with gas heat and electric air conditioning, automatic blower operation is controlled by the ________________________________________ for cooling and by the ________________________________________ for heating.
Fill in the blank(s) with the appropriate word(s).
According to Pascal's law, what happens to the pressure of a propane tank as it empties?
A) The pressure increases toward the top of the tank. B) The pressure remains uniform throughout the tank. C) The pressure increases toward the bottom of the tank. D) Pascal's law does not explain what happens to pressure.