Technician A says that both R-12 and R-134a refrigerants are lighter than air when in a gaseous state. Technician B says that using an electronic leak detector is not always the best way of sourcing a leak because its sensitivity can make identifying the location difficult. Who is correct?

A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A nor B


Answer: B

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

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Producers are in the business of raising animals for

What will be an ideal response?

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Most purebred swine are used in the __________ business instead of commercial pork production.

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

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