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| llamada automática por una línea retenida | |||
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automatic : 37 phrases in 11 subjects |
| Communications | 9 |
| Computer numerical control | 1 |
| Data processing | 1 |
| Electronics | 12 |
| General | 1 |
| Information technology | 6 |
| Mechanic engineering | 1 |
| Medical | 1 |
| Packaging | 2 |
| Technology | 2 |
| Textile industry | 1 |