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Control Unit : 94 phrases in 15 subjects |
| Astronautics | 3 |
| Aviation | 14 |
| Communications | 5 |
| Computers | 1 |
| Economics | 1 |
| General | 2 |
| ICAO | 1 |
| Information technology | 15 |
| Mechanic engineering | 1 |
| Military | 41 |
| Navigation | 1 |
| Oil and gas | 3 |
| Physics | 1 |
| Technology | 4 |
| Telecommunications | 1 |