essais de contrôle: 16 phrases in 11 subjects |
Air defense | 1 |
Aviation | 3 |
Construction | 2 |
Electronics | 1 |
Hydraulic engineering | 1 |
Measuring instruments | 1 |
Mechanic engineering | 1 |
Military | 1 |
Name of organization | 1 |
Textile industry | 1 |
Trucks/Lorries | 3 |