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| service interval; service line | |||
| range of services | |||
| scope of services | |||
| grade of service; scope of service | |||
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| service area | |||
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服务 范围 : 13 phrases in 8 subjects |
| Architecture | 1 |
| Aviation | 1 |
| Economy | 2 |
| Electronics | 2 |
| General | 1 |
| Information technology | 2 |
| Technology | 3 |
| United Nations | 1 |
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