Tuubooyinka birta ayaa door muhiim ah ka ciyaara sida walxaha lagama maarmaanka u ah dhismaha, injineernimada, iyo wax soo saarka. Kuwaas waxaa ka mid ah, tuubada birta ee Q24G waa tuubbo bir ah oo isku dhejisan oo caadi ah, alaabteeduna waxay had iyo jeer soo jiidatay dareen badan. Warshadaha birta, fahamka sifooyinka ...
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