A type of welding flows, which is the result of a perfect proportion and mixture of acetylene and oxygen and is used for fusion welding of steel and cast iron, is

A type of welding flows, which is the result of a perfect proportion a

1.	A type of welding flows, which is the result of a perfect proportion and mixture of acetylene and oxygen and is used for fusion welding of steel and cast iron, is
A.	arburizing flame
B.	xidizing flame
C.	xy-acetylene flame
D.	eutral flame
Answer» E.

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A type of welding flows, which is the result of a perfect proportion and mixture of acetylene and oxygen and is used for fusion welding of steel and cast iron, is

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