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encravamento : 91 phrases in 12 subjects |
| Automatic control | 1 |
| Chemistry | 2 |
| Communications | 10 |
| Electric traction | 3 |
| Electrical engineering | 3 |
| Electronics | 11 |
| General | 2 |
| Information technology | 1 |
| Mechanic engineering | 10 |
| Rail transport | 7 |
| Telegraphy | 1 |
| Transport | 40 |