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8 July, 17:58

Which source of energy do refrigeration systems and heat pumps have in common?

air

ground

water

sunlight

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Answers (2)
  1. 8 July, 20:19
    0
    The source of energy that the refrigerator systems and heat pumps that they have in common is sunlight. It is because both appliances need heat in order to use its functions. Without heat, they won't be used and their functions will not be processed.
  2. 8 July, 21:21
    0
    The answer is A. air
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