The hardest faults to discover are those that materialize only Occasionally—intermittent activities. They are often because of undesirable connections, dust, Dust, corrosion or just damaged wiring or connectors. Gi? x? s? mi?n nam l??ng truy c?p trên h? th?ng Sites Minh Ng?c r?t l?n nên các b?n c?n l?u ý m?t s? v?n ?? sau ?? ??m b?o xem tr?c