 |
| filter mask: 10 phrases in 10 subjects |
| Biotechnology | 1 |
| Ecology | 1 |
| Electronics | 1 |
| Information technology | 1 |
| Oil processing plants | 1 |
| Polygraphy | 1 |
| Security systems | 1 |
| Telecommunications | 1 |
| Transport | 1 |
| Weapons of mass destruction | 1 |
|
| filter mask: 10 phrases in 10 subjects |
| Biotechnology | 1 |
| Ecology | 1 |
| Electronics | 1 |
| Information technology | 1 |
| Oil processing plants | 1 |
| Polygraphy | 1 |
| Security systems | 1 |
| Telecommunications | 1 |
| Transport | 1 |
| Weapons of mass destruction | 1 |