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Travka [436]
2 years ago
15

Which of the following must always be replaced when a retrofit is performed?

Biology
2 answers:
Volgvan2 years ago
4 0

Answer:

D. Refrigerant oil.

Explanation:

The job of a refrigerant oil is to lubricate the compressor, if you don't replace it, you may lose your compressor and all are gonna be ruined.

That's why is more important. Also, depending on the situation, because every situation aren't the same.

Olegator [25]2 years ago
3 0
The answer is c, hope it helped
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