The hardest faults to locate are the ones that materialize only once in a while—intermittent occasions. They are often due to negative connections, dust, Dust, corrosion or just damaged wiring or connectors.B?n c?ng có th? xem k?t qu? x? s? Mi?n Nam theo tên t?nh b?ng cách click on vào ?âyCh? nh?t: Kiên Giang, Lâm ??ng, Ti?n Giang K?t qu?