 |
| electrical level: 21 phrases in 12 subjects |
| Construction | 2 |
| Electrical engineering | 1 |
| Energy system | 1 |
| Labor organization | 1 |
| Mass media | 5 |
| Medical | 1 |
| Nautical | 1 |
| Occupational health & safety | 2 |
| Oil / petroleum | 3 |
| Technology | 2 |
| Telecommunications | 1 |
| Thermal engineering | 1 |