| 摘要 |
An aircraft ( 12 ) includes a servicing opening ( 26 ) and multiple service levels ( 82, 102 ). The service levels ( 82, 102 ) include a noncargo-based service level ( 82 ). The service levels ( 82, 102 ) are accessible through the service opening ( 26 ). An aircraft onboard primary servicing system ( 66 ) includes a primary service sub-system ( 151 ). An aircraft primary service coupler ( 154 ) is configured to attach to a corresponding terminal primary service coupler ( 152 ). The aircraft primary service coupler ( 154 ) and the terminal primary service coupler ( 152 ) providing at least one primary service therethrough.
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