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2 April, 21:21

Heat from burning fuel warms the walls of the firebox section of the furnace in

A. a hot-water heating system.

B. a hot-air heating system.

C. a compressor compartment.

D. an evaporation system.

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  1. 2 April, 22:07
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    In a hot air heating system a firebox section is used to heat up the air to create pressure.
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