Sunday, September 11, 2022
多层焊时,每焊完一层后应彻底清除()(发现裂纹应清除)后,方可进行下一层焊缝的焊接。A、熔渣B、药皮C、锈迹D、铁屑...
Wednesday, February 22, 2023
Monday, September 12, 2022
施焊部位及两侧各10~20mm内应清除()、煤渣等杂物。A、水分B、铁锈C、油污D、沙石...
Saturday, September 9, 2023
经过塑性变形的金属,晶粒沿着外力的方向被()了,金属的硬度,强度提高。A、压缩B、破坏C、拉长...
Wednesday, November 29, 2023
装用转K4型转向架者,当心盘垫板厚度大于25mm时,可换装厚度不小于()mm的上旁承磨耗板。A、5B、10C、15D、20...
Tuesday, April 2, 2024
Sunday, September 11, 2022
零部件的()时,须符合原设计的材质、形状和厚度的要求。A、截换B、挖补C、补强D、切割...
Wednesday, November 29, 2023
组装后,测量脚蹬下平面至轨面垂直距离为()mm,不符合规定时重新...
Monday, September 12, 2022
埋弧焊选用()。A、耐候钢焊条B、普碳钢焊条C、J557CrNiCu焊条D、TH551-NQ-Ⅲ焊丝...
Sunday, May 5, 2024
Wednesday, July 5, 2023
Monday, December 11, 2023
捆绑座检修要求:()。A、捆绑座裂纹时焊修B、焊缝开裂时焊修C、裂损时更换D、丢失时补装...
Monday, December 12, 2022
在同样的板厚条件下,焊缝尺寸越大,则横向收缩()。A、越大B、一般C、越小...
Tuesday, October 24, 2023
内凹检测敞车端墙板大于()mm时超限。A、30B、40C、50D、60...
Wednesday, November 29, 2023
Saturday, September 23, 2023
Sunday, April 30, 2023
焊接接头的淬硬组织是指()组织。A、铁素体B、珠光体C、马氏体...
Tuesday, October 24, 2023
平车木板拼接要求:()。A、两段拼接B、两侧搭口须刨光C、接口须搭在中梁上D、相邻板须为整板...
Sunday, August 20, 2023
Sunday, September 11, 2022