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#articles #aanthe #englishgrammar -A : is used before a noun that is singular, indefinite, and begins with a consonant sound: -Example: "A cat is sleeping." -An: is used before a noun that is singular, indefinite, and begins with a vowel sound: - Example: "An apple is on the table." -The: is used before a noun that is specific, previously ...
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The first step in preventive maintenance and repair of equipment is recovering refrigerant. In this process, the system’s refrigerant is transferred into a refillable refrigerant cylinder. By doing this, we can prevent refrigerants from leaking into the atmosphere. To learn more about effective refrigerant recovery techniques, check out the full episode on the HVAC School website. #HVAC #HVACSchool #HVACtipsandtricks #HVACmaintenance | HVAC School
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