The hardest faults to discover are those that come about only Every now and then—intermittent situations. They can be caused by undesirable connections, dust, Grime, corrosion or simply damaged wiring or connectors.- Xem d? ?oán b?ch th? two s? cu?i c?a các gi?i ??c bi?t và gi?i eight c?a các t?nh s?p m? th??ng hôm nay.B?i mu?n gi?i b?t k?