A、±5% B、±15% C、±10% D、±8%
A、1.5mm B、2mm C、2.5mm D、3mm
A、壓板下口對(duì)地為+110V左右,上口對(duì)地為-110V左右 B、壓板下口對(duì)地為+110V左右,上口對(duì)地為0V左右 C、壓板下口對(duì)地為0V,上口對(duì)地為-110V左右 D、壓板下口對(duì)地為+220V左右,上口對(duì)地為0V