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Category - Analysis & Reporting

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Heating systems often use PEX tubing. What does PEX stand for?

Polyethylene exchange
Polyvinyl exchange
Cross-linked polyethylene
Cross-linked polyvinyl

Explanation

Answer: C - Heating systems often use PEX tubing. PEX stands for cross-linked polyethylene. It is a common alternative to copper tubing in homes. It is available in various diameters, which makes it versatile.

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