Engine : Expired / Refrigeration AC - 456/252
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| When checking zinc plates, or pencil Zincs in the refrigerating system condenser, what should you do? |
| A) replace the Zincs if deteriorated by 50% |
| B) renew the plates at each inspection |
| C) file the plates to change the negative value |
| D) paint and insulate the plates to prevent corrosion |
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