 |
| Quality certificate: 30 phrases in 18 subjects |
| Aviation | 1 |
| Business | 3 |
| Commerce | 2 |
| Cooking | 1 |
| Customs | 1 |
| Economy | 2 |
| Energy industry | 1 |
| Food industry | 1 |
| General | 4 |
| Industry | 1 |
| Law | 1 |
| Oil / petroleum | 3 |
| Oil processing plants | 1 |
| Pharmacology | 1 |
| Production | 1 |
| Quality control and standards | 1 |
| Technology | 4 |
| Telecommunications | 1 |