Workshop Technology
A two high rolling mill consists of two rolls which rotate

At the same speed but in opposite direction
At the same speed and in the same direction
At different speeds and in the opposite direction
At different speeds and in the same direction

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Workshop Technology
Linde welding uses

Neutral flame and rightward technique
Oxidizing flame and leftward technique
Carburising flame and rightward technique
Neutral flame and leftward technique

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