When using a self-contained recovery unit to recover refrigerant vapor, the discharge of the recovery unit is

typically connected to _____.

a. a suitable plastic recovery bag
b. a recovery cylinder
c. the high-side port of the gauge manifold
d. the low-side port of the gauge manifold


b

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The most current edition of the NFPA 70E was published in _________________________.

A. 2000 B. 2005 C. 2009 D. 2011

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Which computer component generates a steady stream of one-bit long voltage pulses?

A) Capacitor B) Volatile memory C) Clock generator D) Central processing unit

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Before a steel plate is used for practice welding, mill scale on the plate is removed because the DCEN used in

GTAW has little or no _____. a. electrical conductance b. flux resistance c. arcing ability d. cleaning action

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A liquid with a specific gravity that is less than 1 is __________ than water.

A. lighter B. heavier

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