Friday, September 16, 2022
Wednesday, May 10, 2023
Friday, September 16, 2022
Friday, September 16, 2022
问题:配水嘴孔眼被刺大历次所测曲线有逐渐向注水量轴偏移的趋势。
Friday, September 16, 2022
Friday, September 16, 2022
问题:压裂不当引起出砂是指(),使砂岩油层多次受到高压高速的压裂液冲刷,破坏了岩石结构。
Friday, September 16, 2022
Friday, September 16, 2022
Friday, September 16, 2022
问题:偶然误差的存在必然会影响到()的大小。A、精密度B、准确度C、可靠性D、正确性
Friday, September 16, 2022
Thursday, September 15, 2022
问题:光杆从上死点到下死点的距离称为光杆冲程长度,简称光杆冲程。
Friday, September 16, 2022
问题:抽油机调整冲次时待抽油机的曲柄停在停止自由摆动后静止不动的位置,刹死刹车。
Tuesday, November 1, 2022
Sunday, September 11, 2022
Friday, September 16, 2022
问题:衡量钻头破岩效率高低的主要指标有()。A、钻头寿命B、研磨性C、钻头进尺D、钻头尺寸E、机械钻速
Thursday, September 15, 2022
Friday, September 16, 2022
Thursday, September 15, 2022
问题:扭矩因数的物理含义是()在曲柄轴上产生的扭矩与悬点载荷的比值。
Friday, September 16, 2022
Friday, September 16, 2022