翻车指挥工单项选择题每日一练(2018.12.28)

A.铅
B.铌
C.铬
D.琥珀

A.15
B.5
C.10
D.20

A.380V
B.220V
C.36V
D.6600V

A.1.1—1.3
B.1.3—1.5
C.1.4—1.5
D.1.5—1.6

A.12
B.14.4
C.13.5
D.14