问题:在钢板上常用的工具有()A、划针B、粉笔C、铅笔D、石笔...
Thursday, January 5, 2023
Thursday, September 15, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
问题:无损探伤除了能检验材料的()和()外,更多地用来检验()中的缺陷...
Thursday, September 15, 2022
问题:机械效率的值永远是()A、大于1B、小于1C、等于1D、负数...
Tuesday, February 20, 2024
问题:凸缘式联轴器,对所连接两轴之间的()没有补偿能力。...
Thursday, September 15, 2022
Thursday, September 15, 2022
Monday, September 12, 2022
问题:冷铆与热铆相比较其优点是:铆钉孔填充的紧密,操作简便,节省燃料。...
Thursday, September 15, 2022
问题:按工种选用手锤,锤把不能过长,有油和裂纹,手锤要有楔子,避免锤头...
Thursday, September 15, 2022
Monday, September 12, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
问题:加工大中型工件的多个孔时,应选用的机床是()。A、台式钻床B、立式钻床C、摇臂钻床...
Thursday, September 28, 2023
问题:为了保护坯料表面,所用锤头或拍板材料硬度()被矫材料的硬度...
Thursday, September 15, 2022
问题:为了保证测量的正确性,线锤的质量根据被测构件的()而定。...
Thursday, September 15, 2022
问题:冲压有哪些优点?()A、产品质量好B、生产率高C、节约材料,降低成本D、易实现自动化...
Saturday, September 30, 2023
问题:对于同一材料制成的细长压杆,其柔度的平方与其临界应力()。...
Wednesday, September 6, 2023
Thursday, September 15, 2022