题目内容
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[单选题]
根据《±660kV架空送电线路导线张力架线施工工艺导则》,跨越通航河流的大跨越档弧垂允许偏差不应大于(),其正偏差不应超过1m。
A.±2.5%
B.+2.5,-0%
C.+1%,-0%
D.±1%
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A.±2.5%
B.+2.5,-0%
C.+1%,-0%
D.±1%
A.5mm
B.10mm
C.15mm
D.20mm
A.110kV
B.220kV
C.330kV
D.500kV
A.3m
B.5m
C.7m
A.6h
B.12h
C.24h
D.48h
A.25°
B.30°
C.35°
D.40°