 |
|
closed-circuit : 64 phrases in 20 subjects |
| Accumulators | 4 |
| Automated equipment | 1 |
| Aviation | 1 |
| Chemistry | 2 |
| Communications | 9 |
| Computer numerical control | 1 |
| Earth sciences | 1 |
| Electric motors | 1 |
| Electronics | 5 |
| Finances | 1 |
| General | 2 |
| Labor law | 5 |
| Materials science | 1 |
| Mechanic engineering | 19 |
| Medical | 6 |
| Natural sciences | 1 |
| Radio | 1 |
| Technology | 1 |
| Telecommunications | 1 |
| Transport | 1 |