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[单选题]
胶接绝缘接头拉开时,应立即复紧两端各50m线路的扣件,限速不超过,并及时入行永久处理()
A.120km/h
B.180km/h
C.200km/h
D.160km/h
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A.120km/h
B.180km/h
C.200km/h
D.160km/h
第7题
A.80
B.120
C.160
D.60
第8题
A.100
B.120
C.160
D.60
第9题
A.40
B.50
C.60
D.70
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