A.15~20mm
B.10~15mm
C.5~10mm
D.2~5mm
[单选题]钢圈连接的钢筋混凝土电杆宜采用电弧焊接,钢圈应对齐找正,中间留( )的焊口缝隙。A.15~20mmB.10~15mmC.5~10mmD.2~5mm
[单选题]钢圈连接的钢筋混凝土电杆宜采用电弧焊接,钢圈应对齐找正,中间留( )的焊口缝隙。A.15~20mmB.10~15mmC.5~10mmD.2~5mm
[单选题]钢圈连接的钢筋混凝土电杆宜采用电弧焊接,钢圈应对齐找正,中间留( )的焊口缝隙。A.15~20mmB.10~15mmC.5~10mmD.2~5mm
[单选题]钢圈连接的钢筋混凝土电杆宜采用电弧焊接,钢圈应对齐找正,中间留( )的焊口缝隙。A.15~20mmB.10~15mmC.5~10mmD.2~5mm
[单选题]钢圈连接的钢筋混凝土电杆宜采用电弧焊接,钢圈应对齐找正,中间留( )的焊口缝隙。A.15~20mmB.10~15mmC.5~10mmD.2~5mm
[单选题]钢圈连接的钢筋混凝土电杆宜采用电弧焊接,钢圈应对齐找正,中间留( )的焊口缝隙。A.15~20mmB.10~15mmC.5~10mmD.2~5mm
[单选题]钢圈连接的钢筋混凝土电杆宜采用电弧焊接,钢圈应对齐找正,中间留( )的焊口缝隙。A.15~20mmB.10~15mmC.5~10mmD.2~5mm
[单选题]钢圈连接的钢筋混凝土电杆宜采用电弧焊接,钢圈应对齐找正,中间留( )的焊口缝隙。A.15~20mmB.10~15mmC.5~10mmD.2~5mm
[单选题]钢圈连接的钢筋混凝土电杆宜采用电弧焊接,钢圈应对齐找正,中间留( )的焊口缝隙。A.15~20mmB.10~15mmC.5~10mmD.2~5mm
[单选题]钢圈连接的钢筋混凝土电杆宜采用电弧焊接,钢圈应对齐找正,中间留( )的焊口缝隙。A.15~20mmB.10~15mmC.5~10mmD.2~5mm