_____ refers to the small bubbles of gas that appear in solid weld metal.
A) Porosity
B) Discontinuity
C) Defect
D) Flaw
Correct Answer:
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Q1: The two most common causes of porosity
Q3: All welds have discontinuities and flaws, but
Q4: Overlap is also referred to as _.
Q5: The localized hardening of an arc strike
Q6: _ are the result of internal stresses
Q7: _ are foreign objects not melted by
Q8: What are some of the surface impurities
Q9: What is the difference between spherical porosity
Q10: A _ is anything that is not
Q11: Why may weld testing be delayed for
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