A.CURRENT
B.INSULATION
C.REMOTE
D.OUTPUT

A.AUTOMATIC
B.CONST
C.RESISTANCE
D.MANUAL

A.FREQUENCY
B.CURRENT
C.VOLTAGE
D.CABLE

A.MANUAL
B.AUTOMATIC
C.CATHODE
D.AUDIO

A.CONTACTOR
B.TRANSFORMER
C.RELAY
D.SWITCH

A.RESISTANCE
B.CONTACT
C.MOTOR
D.ALARM

A.CONTACTOR
B.INSULATION
C.RELAY
D.TRANSFORMER

A.ALARM
B.CABLE
C.BATTERY
D.CURRENT

A.2.54
B.3.14
C.4.16
D.5.18

A.拧紧接线盒的压线螺母
B.检查定子绕组的绝缘是否老化
C.清除电动机外壳的灰尘和污物
D.检查转轴及电动机的转动情况

A.2—4
B.3—5
C.5—7
D.4—6