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8491
The purpose of a relief valve installed in the tank venting system of a turbine engine oil tank is to
| | A) maintain a positive internal pressure in the oil tank after shutdown to prevent oil pump cavitation on engine start. |
| | B) prevent oil pump cavitation by maintaining a constant pressure on the oil pump inlet. |
| | C) maintain internal tank air pressure at the ambient atmospheric level regardless of altitude or rate of change in altitude. |
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