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| système à chauffage par l'intermédiaire d'un échangeur de chaleur | |||
| système indirect | |||
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indirect system : 21 phrases in 10 subjects |
| Automated equipment | 2 |
| Communications | 1 |
| Earth sciences | 2 |
| Economics | 1 |
| Electronics | 3 |
| Finances | 1 |
| General | 3 |
| Law | 1 |
| Taxes | 6 |
| Technology | 1 |