Technician A says that bubbles can be seen through the sight glass on an R-134a system even when it appears to be operating normally. Technician B says that many R-134a truck A/C systems are no longer fitted with sight glasses. Who is correct?

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


Answer: C

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What will be an ideal response?

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Indicate whether the statement is true or false

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