A . 15~20㎜
B . 10~15㎜
C . 5~10㎜
D . 2~5㎜
[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