If the flame is produced under the hearth and then sweeps up into the – McqOptions

MCQOPTIONS

1.	If the flame is produced under the hearth and then sweeps up into the heating chamber, this is called a/an __________ furnace.%!
A.	Sidefired
B.	Underfired
C.	Covered
D.	Recirculating
Answer» C. Covered

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