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| Höchstfrist f | |||
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maximum period : 15 phrases in 9 subjects |
| Construction | 1 |
| Education | 1 |
| Electricity generation | 2 |
| Electronics | 4 |
| Foreign trade | 1 |
| General | 2 |
| Social science | 1 |
| Technology | 2 |
| Transport | 1 |
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