Manufacturing And Production Technology
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

Oxy-acetylene flame
Oxidizing flame
Neutral flame
Carburizing flame

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Manufacturing And Production Technology
Jigs are used

None of these
For holding and guiding the tool in drilling, reaming or tapping operations
For holding the work in milling, grinding, planing or turning operations
To check the accuracy of workpiece

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