système de certification: 51 phrases in 15 subjects |
Agriculture | 6 |
Aviation | 9 |
Chemistry | 1 |
Commerce | 7 |
Education | 1 |
Finances | 1 |
Forestry | 2 |
General | 2 |
Health care | 1 |
Industry | 1 |
Information technology | 2 |
Law | 1 |
Name of organization | 9 |
Technology | 7 |
Transport | 1 |