The purpose of purging the lines with nitrogen during brazing is to:
A) Pressurize the lines for leak testing.
B) Reduce the amount of refrigerant that must be added once the installation is completed.
C) Prevent the formation of copper oxide inside the lines.
D) Increase the temperature of the torch flame and decrease brazing time.
C
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The minimum interpass temperature is usually the same as the ____________________ temperature.
Fill in the blank(s) with the appropriate word(s).