1.

The heat source intensity for laser beam welding lies in the range ____?

A. 10<sup>5</sup>-10<sup>7</sup>
B. 10<sup>5</sup>-10<sup>8</sup>
C. 10<sup>10</sup>-10<sup>12</sup>
D. 10<sup>12</sup>-10<sup>14</sup>
Answer» D. 10<sup>12</sup>-10<sup>14</sup>


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