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система в условиях аварийного перерыва в энергоснабжении (MichaelBurov) |
black system : 13 phrases in 9 subjects |
Chess | 1 |
General | 1 |
Gold mining | 1 |
Mass media | 1 |
Military | 2 |
Oil and gas technology | 1 |
Programming | 3 |
Rail transport | 1 |
Technology | 2 |