A.平層感應(yīng)器壞 B.開門限位開關(guān)壞 C.門機壞 D.安全觸板壞
A.主梯為0,副梯為0 B.主梯為1,副梯為0 C.主梯為0,副梯為1 D.主梯為1,副梯為1
A.10cm B.5cm C.3cm D.0.5cm