Basic open hearth furnace (BOF) is not used for producing __________ s

1.	Basic open hearth furnace (BOF) is not used for producing __________ steel.
A.	killed
B.	rimming
C.	high alloy
D.	none of these
Answer» D. none of these

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Basic open hearth furnace (BOF) is not used for producing __________ steel.

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