It's a used refrigerant that should have gone through a basic, on-site, cleaning process, which is normally carried out by the contractor completing the work. Conversely, reclaimed refrigerant is product that has been reprocessed by a licensed facility to the industry standard AHRI 700 to match that of virgin product.
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This is a gerund phrase.
A gerund is a noun form of a verb that ends in “ing.”
Answer:
Political and religious beliefs over petty concerns that can result in war and death.
