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| scheduled maintenance | |||
| обслуживание по графику: 10 phrases in 8 subjects |
| Astronautics | 1 |
| Automated equipment | 1 |
| Aviation | 2 |
| Communications | 1 |
| Information technology | 2 |
| Logistics | 1 |
| Mass media | 1 |
| Military | 1 |
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