1.

What is the temperature of arc needed for arc welding?

A. 600-1000<sup>o</sup>C
B. 2000-4000<sup>o</sup>C
C. 5000-6000<sup>o</sup>C
D. 6000-8000<sup>o</sup>C
Answer» D. 6000-8000<sup>o</sup>C


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