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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》,当接地体连接采用搭接焊接肘,圆钢与圆钢及扁钢的搭接长度应不少于圆钢直径的()倍并应双面施焊扁钢的搭接长度应不少于其宽度的()倍并应囚面施焊。
A.6;3
B.5;3
C.6;2
D.5;2
查看答案
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A.6;3
B.5;3
C.6;2
D.5;2
A.±2.5%
B.+2.5,-0%
C.+1%,-0%
D.±1%
A.2
B.5
C.7
D.14
A.2km
B.3km
C.4km
D.5km
A.1/650,1/800
B.1/650,1/1000
C.1/750,1/800
D.1/750,1/1000
A.110kV
B.220kV
C.330kV
D.500kV
A.<桩长2%
B.≤桩长2%
C.<桩长1%
D.≤桩长1%
A.D≥40d+100mm
B.D≥40d-100mm
C.D≤40d+100mm
D.D≤40d-100mm
A.1.5
B.2
C.2.5
D.3