Environmental regulations now require HVAC (heating, ventilation, and air conditioning) technicians to R-22 refrigerant from existing cooling systems rather than venting it during repairs; this careful collection process prevents the ozone-depleting substance from causing atmospheric damage and allows for proper disposal or reclamation later.
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Verbal·Craft and Structure·Words in Context
mediumWhich choice completes the text with the most logical and precise word or phrase?
A
release
B
shield
C
measure
D
recover