Engine : General Subjects - 1898/1128 |
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What effect does preheating, concurrent heating, or post heating have on welding a joint? |
A) Decreasing the temperature gradient in the weld area and relieving internal stresses. |
B) Increasing the temperature gradient in the weld area and relieving internal stresses. |
C) Decreasing the temperature gradient in the weld area and intensifying internal stresses. |
D) Increasing the temperature gradient in the weld area and intensifying internal stresses. |
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