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kjustice4 kjustice4
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6 years ago
Which of the following statements regarding furnaces is MOST accurate?
 
  A. Floor furnaces require temperature-limit controls.
  B. Wall furnaces are located in the basements of houses.
  C. Gravity furnaces rely on a fan to move heated air through the system.
  D. Forced-air furnaces operate primarily by the circulation of air without the use of fans.
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6 years ago
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