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| sistema cerrado | |||
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sistema chiuso : 28 phrases in 11 subjects |
| Computer numerical control | 1 |
| Earth sciences | 1 |
| Electronics | 4 |
| Environment | 1 |
| General | 4 |
| Information technology | 2 |
| Measuring instruments | 3 |
| Mechanic engineering | 9 |
| Natural sciences | 1 |
| Transport | 1 |
| Water resources | 1 |
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