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| frequenza dei controlli | |||
| frequenza di esame | |||
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test frequency : 12 phrases in 7 subjects |
| Communications | 2 |
| Electric motors | 1 |
| Mechanic engineering | 1 |
| Medical | 2 |
| Sound recording | 1 |
| Technology | 4 |
| Water resources | 1 |
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