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| fréquence variable: 29 phrases in 13 subjects |
| Astronautics | 1 |
| Aviation | 2 |
| Chemistry | 1 |
| Computers | 1 |
| Construction | 1 |
| Electronics | 3 |
| General | 1 |
| Measuring instruments | 1 |
| Mechanic engineering | 1 |
| Medical | 1 |
| Power electronics | 1 |
| Radio | 12 |
| Technology | 3 |
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