装卸桥检修后,应大车不啃道,即车轮轮缘与轨道没有挤压磨损,二者至少应留有()的间隙。A、0.5~1mmB、1~2mmC、2~3mmD、3~4mm...
Friday, May 10, 2024
Sunday, September 11, 2022
Saturday, September 16, 2023
Thursday, September 14, 2023
齿轮传动式重车定位机的推车行程为()。A、50mB、40mC、30mD、20m...
Tuesday, January 3, 2023
Sunday, September 11, 2022
低碳钢的碳含量为()。A、0.10%~0.25%B、0.25%~0.6%C、0.6%~1.3%D、1.3%~2%...
Saturday, July 29, 2023
钻小孔时转速快些,走刀量小结;钻大孔时,转速慢些,走刀量适当大些。...
Tuesday, January 3, 2023
Sunday, September 11, 2022
Thursday, November 10, 2022
电焊工作时,接到焊钳一端的导线至少有()m为绝缘软导线。...
Sunday, September 11, 2022
工人砸煤时应戴(),砸煤时要注意站的位置,以防跌倒伤人。...
Sunday, September 11, 2022
厂用专业机动车辆在遇到路面狭窄不平时,重车时速不准超过()km/...
Sunday, September 11, 2022
扑救可能产生有毒气体的火灾时,扑救人员应使用()式消防空气呼吸器...
Sunday, September 11, 2022
Tuesday, January 3, 2023
Tuesday, January 3, 2023
Sunday, September 11, 2022
Tuesday, January 10, 2023
Thursday, October 27, 2022
为何要采用剖视图?在什么情况下用全剖视?在什么情况下用半剖视?...
Monday, November 21, 2022