问题:对接焊缝与角焊缝相比较,其纵向收缩量()。A、大B、小C、相等...
Tuesday, December 13, 2022
Thursday, September 15, 2022
Saturday, September 17, 2022
Saturday, September 17, 2022
Friday, September 16, 2022
问题:焊接电弧是由阴极区、阳极区和弧柱区三部分组成的,其中()温度最高...
Saturday, September 17, 2022
Sunday, September 11, 2022
问题:要求客户定期对HIT-201垂直气电焊保养指的是什么?...
Tuesday, January 10, 2023
问题:奥氏体钢与低碳钢焊接时,若选用的焊条金属合金化程度不够高或者熔合...
Sunday, September 11, 2022
Wednesday, May 10, 2023
问题:钨极氩弧焊采用小电流焊接时,电弧的静特性曲线在; U形曲线的()。A、下降段B、水平段C、上升段...
Saturday, October 1, 2022
问题:对于焊缝内部的裂纹,超声波检验比射线检验的灵敏度要高。...
Saturday, September 17, 2022
Tuesday, September 13, 2022
Tuesday, September 13, 2022
问题:动铁心漏磁式弧焊弧焊变压器采用动铁心的特点是()。...
Saturday, September 17, 2022
问题:焊机铭牌上标称暂载率为60%,最大焊接电流为500A。用户想在标...
Saturday, September 17, 2022
问题:常用的致密性检验方法有()试验、()试验、()试验、()试验、和()试验。...
Saturday, June 3, 2023
问题:HIT-28-1控制盒+HIT-1CW小车+HIT-33摆动器一...
Friday, September 16, 2022
Thursday, February 23, 2023
Tuesday, September 13, 2022