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| сообщение по линии: 20 phrases in 10 subjects |
| Computer networks | 2 |
| Computers | 1 |
| Economy | 1 |
| Information security and data protection | 1 |
| Information technology | 2 |
| Makarov | 1 |
| Mass media | 6 |
| Military | 1 |
| Security systems | 3 |
| Telecommunications | 2 |