继电器检修作业指导单项选择题每日一练(2019.08.17)

A.±5%
B.±10%
C.±15%
D.±20%

A.14、55
B.15、51
C.15、55

A.1.1
B.1.2
C.1.3
D.1.35

A.0.6S±0.1S
B.0.8S±0.1S
C.0.4S±0.1S
D.0.5S±0.1S

A.大于
B.小于
C.大于等于
D.小于等于