问题:单臂压力机架装配时,采用整体总装配后,再进行焊接,这样可增加结构(),以减少焊接变形。...
Tuesday, September 20, 2022
问题:多选题下面那些含碳量的钢叫做高碳钢?()A0.6%B1.3%C0.3%D0.8%...
Tuesday, April 30, 2024
Thursday, September 22, 2022
问题:多选题电焊引弧的方法有()A擦划法B平划法C点弧法D直线法...
Friday, March 24, 2023
Thursday, September 15, 2022
Monday, September 19, 2022
Saturday, September 17, 2022
问题:两个材料和横截面尺寸相同的细长压杆,如果它们的长度比为1:2,则两压杆的临界载荷的比为()。...
Thursday, September 22, 2022
问题:单臂压力机架装配时,采用整体总装配后,再进行焊接,这样可增加结构(),以减少焊接变形。...
Saturday, September 17, 2022
Thursday, September 22, 2022
问题:问答题为什么要对龙门剪板机上的刀片间隙进行调整?...
Wednesday, January 31, 2024
Monday, September 19, 2022
问题:在平面截切圆柱时,截切平面平行圆柱轴的截面是()。...
Tuesday, August 9, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
问题:龙门剪切时,上下刀片之间()间隙,否则剪下的材料边缘上会产生许多毛刺...
Thursday, September 22, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
Wednesday, September 14, 2022
问题:单选题某些强度较高的材料在冲裁或剪切前,需要安排()工序进行降低硬度处理。A 调质B 高温回火C 退火D 回火...
Tuesday, July 4, 2023