| |||
| Umluft f | |||
|
recirculation air : 25 phrases in 10 subjects |
| Agriculture | 2 |
| Construction | 3 |
| Electronics | 4 |
| General | 2 |
| Mechanic engineering | 1 |
| Metallurgy | 1 |
| Mining | 2 |
| Physics | 1 |
| Technology | 5 |
| Transport | 4 |
| |||
| Umluft f | |||
|
recirculation air : 25 phrases in 10 subjects |
| Agriculture | 2 |
| Construction | 3 |
| Electronics | 4 |
| General | 2 |
| Mechanic engineering | 1 |
| Metallurgy | 1 |
| Mining | 2 |
| Physics | 1 |
| Technology | 5 |
| Transport | 4 |