The hardest faults to locate are the ones that occur only once in a while—intermittent situations. They can be caused by bad connections, dust, Dust, corrosion or simply damaged wiring or connectors.Th?ng kê t?n su?t loto Th?ng kê t?n su?t c?p loto Th?ng kê Lô gan Th?ng kê 2 s? cu?i gi?i ??c bi?t Th?ng kê gi?i ??c bi?t theo tu?n Th?ng kê g