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esercizio : 19 phrases in 9 subjects |
| Economics | 5 |
| Electricity generation | 2 |
| Finances | 2 |
| Lighting other than cinema | 1 |
| Microsoft | 1 |
| Power system protection | 1 |
| Radio | 1 |
| Telephony | 4 |
| Water resources | 2 |
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