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| interruzione del circuito d'uscita | |||
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direct current : 80 phrases in 12 subjects |
| Communications | 8 |
| Earth sciences | 8 |
| Electronics | 30 |
| Energy industry | 1 |
| General | 1 |
| Information technology | 6 |
| Mechanic engineering | 8 |
| Metallurgy | 2 |
| Municipal planning | 3 |
| Natural sciences | 1 |
| Technology | 1 |
| Transport | 11 |