Engine : Expired / General Subjects - 373/881
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| To add small amounts of refrigerant to the low side of an air conditioning system, the refrigerant should be introduced through a particular valve and in a particular state. What valve and state combination is correct? |
| A) suction service valve as a vapor |
| B) discharge service valve as a vapor |
| C) discharge service valve as a liquid |
| D) suction service valve as a liquid |
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