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Keep going الطاقة، معلومات علمية، معلومات ثقافية 26 يناير 2016

1. ابحث عن مصادر طاقة بديلة لا تعتمد على مصدر واحد للطاقة، حاول إيجاد أكثر من مصدر للحرارة ورتبها حسب الحاجة لها، مثلاً المصدر الأقوى للط...

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