问题:在装配图中,要求明细栏的序号与视图的零件编号一致是为了()。...
Thursday, September 15, 2022
Saturday, July 19, 2025
问题:通常把零件加工后几何参数所产生的差异称为加工误差。它包括()。A、尺寸误差B、形状误差C、位置误差D、表面粗糙度...
Thursday, December 12, 2024
Friday, March 15, 2024
问题:钢板的塑性在顺着轧制的方向上()。A、最好B、最差C、没有影响...
Monday, December 9, 2024
问题:由于材料在高温塑性体状态时塑性很好,可获得()的弯曲半径。...
Thursday, September 15, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
Sunday, November 17, 2024
Thursday, December 12, 2024
Thursday, September 15, 2022
问题:攻螺纹时,螺纹钻孔的底孔直径为什么要略大于螺的小径?...
Monday, October 31, 2022
Thursday, September 15, 2022
问题:筒形容器拼接时,相邻段节的二条平行焊缝位置必须错开,通常情况下,它们错开的距离应为()。...
Friday, October 11, 2024
Monday, September 12, 2022
Thursday, June 29, 2023
Friday, February 23, 2024
问题:摇臂钻床和立式钻床相比,最重要的特点是()。A、可以加工不同高度的工件B、主轴可以调整到加工范围内的任一位置C、电动机功率大...
Wednesday, July 9, 2025
问题:材料的弯曲变形有()种形式。A、自由弯曲B、接触弯曲C、矫正弯曲D、连接弯曲...
Sunday, July 30, 2023
Monday, September 12, 2022