Adding ____ has the same effect on the electrode characteristic as thorium, but it is not radioactive.
A) pure tungsten
B) cerium
C) zirconium
D) lanthanum
Correct Answer:
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Q4: DCEN concentrates about _ of its welding
Q5: With _, penetration and bead profile are
Q6: Which of the following is a way
Q7: The _ protects the molten weld pool,
Q8: Which of the following is true of
Q10: Which of the following is true of
Q11: DCEP concentrates _ of the arc heat
Q12: The improved electron emission of the _
Q13: _ electrodes have a current-carrying capacity similar
Q14: AC concentrates about _ of its welding
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