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| нулевая радиоактивность | |||
| нулевая активность | |||
| zero activity: 8 phrases in 6 subjects |
| Astronautics | 2 |
| Aviation | 1 |
| Information technology | 1 |
| Programming | 2 |
| Project management | 1 |
| Quality control and standards | 1 |
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