A.不偏转 B.满刻度偏转 C.偏转至1/2 D.偏转至1/3
A.停转状态 B.额定转速状态 C.高速转动状态 D.逐渐降速状态
A.15S B.30S C.60S D.90S
A.有效距离 B.安全距离 C.危险距离 D.绝缘
A.Ω B.KΩ C.MΩ D.GΩ