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retención : 126 phrases in 27 subjects |
| Agriculture | 9 |
| Animal husbandry | 1 |
| Chemistry | 5 |
| Communications | 11 |
| Construction | 1 |
| Earth sciences | 10 |
| Economy | 1 |
| Electric motors | 1 |
| Electronics | 4 |
| Environment | 3 |
| Finances | 4 |
| Industry | 4 |
| Information technology | 6 |
| Insurance | 4 |
| International trade | 1 |
| Law | 6 |
| Life sciences | 5 |
| Materials science | 1 |
| Mechanic engineering | 21 |
| Medical | 5 |
| Microsoft | 5 |
| Natural sciences | 2 |
| Power system protection | 1 |
| Social science | 3 |
| Taxes | 2 |
| Telecommunications | 3 |
| Transport | 7 |
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