Tuesday, September 13, 2022
问题:对运转的设备部件进行修理或在旋转部位清理卫生和长期停留。...
Tuesday, September 13, 2022
问题:气动绞车的操作人员应在指导师傅的监督下至少接受()小时的实操训练...
Tuesday, September 13, 2022
Tuesday, September 13, 2022
问题:计算题:用玻璃管做成密度计,下端小球中装有弹丸,管子外径20mm...
Tuesday, September 13, 2022
问题:JC70D绞车润滑部分用于绞车各运转部位轴承、齿轮等件的润滑。...
Tuesday, September 13, 2022
Tuesday, September 13, 2022
问题:使用旋流分离器进行除砂和除泥时,要获得最佳分离效果的关键因素是(...
Tuesday, September 13, 2022
问题:钻进过程中,如发生顶钻现象时,应采取的措施有()A、高速快进B、低速慢进C、边退边进D、边进边退...
Thursday, July 17, 2025
问题:麻花钻、中心钻是孔加工中的()刀具A、通用B、专用C、组合...
Friday, January 19, 2024
问题:对于()溢流来说,更要强调及时发现溢流并迅速关井的重要性。...
Tuesday, September 13, 2022
问题:替多余水泥浆时,未完全返出井口前,不能停泵或(),要不停的转动或上下活动钻具。...
Saturday, August 31, 2024
问题:距井口20m范围内的所有电器、线路必须符合防爆要求。...
Sunday, September 11, 2022
问题:检查天车架,当发现天车架出现裂纹或变形较大时应更换天车。...
Friday, January 19, 2024
问题:矿山、金属冶炼、建筑施工、道路运输单位和危险物品的生产、经营、储...
Tuesday, September 13, 2022
Monday, January 6, 2025
Tuesday, September 13, 2022
Saturday, September 30, 2023
问题:3-1/2"N80EUE油管标记为:()。A、红色B、绿色C、白色D、黄色...
Tuesday, May 7, 2024
Tuesday, September 13, 2022