A.電渣壓力焊 B.電阻電焊 C.閃光對(duì)焊 D.埋弧焊
A.4mm B.20mm C.40mm D.60mm
A.切斷鋼筋的最大直徑是40mm B.切斷鋼筋的最小直徑是40mm C.切斷機(jī)的轉(zhuǎn)速是40r/min D.切斷機(jī)的功率是40Kw