Adding ____ has the same effect on the electrode characteristic as thorium, but is not radioactive.
A) cerium
B) lanthanum
C) zirconium
D) pure tungsten
Correct Answer:
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Q3: In GTAW, the arc temperature is around
Q4: With _, penetration and bead profile are
Q5: Which of the following is true of
Q6: Water hose fittings have _ threads, and
Q7: _ has the poorest heat resistance and
Q9: Which of the following is an inert
Q10: _ additions are restricted to stainless steels
Q11: _ results in welds with deep penetration,
Q12: Which of the following is true of
Q13: Which of the following is true of
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