【سؤال يومي】 3.18 سؤال اختيار من بين الخيارات: عند اختيار نوع صمام التحكم، سواء كان صمامًا يعمل بالهواء أو صمامًا يعمل بعدم وجود هواء، يجب أولاً الأخذ في الاعتبار ( ).

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