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оперативная система : 14 phrases in 10 subjects |
| Automated equipment | 1 |
| Automobiles | 1 |
| Computers | 3 |
| Electronics | 1 |
| Firefighting and fire-control systems | 1 |
| Information technology | 2 |
| Military | 1 |
| Psychology | 1 |
| Rail transport | 1 |
| Technology | 2 |
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