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》,对普通硅酸盐和矿渣硅酸盐水泥拌制的混凝土浇水养护,不得少于()昼夜。
A.7
B.14
C.21
D.28
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A.7
B.14
C.21
D.28
A.5mm
B.10mm
C.15mm
D.20mm
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%