Technician A says valve stems are often coated with Teflon. Technician B says chrome is the popular stem coating in Europe. Who is correct?

A. Technician A
B. Technician B
C. Both technicians
D. Neither technician


Answer: D

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Shielding gases in the gas metal arc process are used primarily to protect the molten metal from oxidation and ____________________.

Fill in the blank(s) with the appropriate word(s).

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A process that is ____________________ means that the filler metal is melted.

Fill in the blank(s) with the appropriate word(s).

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Fill in the blank(s) with the appropriate word(s).

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