 |
| |||
| proving site | |||
| площадка опробования: 7 phrases in 4 subjects |
| Aeronautics | 1 |
| Airports and air traffic control | 1 |
| Aviation | 4 |
| Oil processing plants | 1 |
|
| |||
| proving site | |||
| площадка опробования: 7 phrases in 4 subjects |
| Aeronautics | 1 |
| Airports and air traffic control | 1 |
| Aviation | 4 |
| Oil processing plants | 1 |