Engine : Electricity - 438/1386
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| Two contributors of electronic console failures are heat and vibration. To combat some of their effects, what should be included in performing preventive maintenance procedures? |
| A) daily inspection of console foundation bolts |
| B) unplugging of all circuit cards and reseating on a daily basis |
| C) periodic changing or cleaning of console ventilation and control room air conditioning filters |
| D) systematic rotation of circuit cards with those from spares to allow component cooling |
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