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| تغير خطأ استقرار ؛القيمة المرجعية | |||
| مرجع | |||
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valeur de référence : 8 phrases in 5 subjects |
| Electrical engineering | 1 |
| Electronics | 2 |
| Food service and catering | 1 |
| International Monetary Fund | 3 |
| Power system protection | 1 |
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