alimentation de secours: 21 phrases in 12 subjects |
Communications | 1 |
Construction | 3 |
Earth sciences | 1 |
Electronics | 2 |
Energy industry | 1 |
General | 2 |
Information technology | 3 |
Law | 2 |
Nuclear physics | 1 |
Thermal engineering | 1 |
Transport | 3 |
United Nations | 1 |