Sunday, March 17, 2024
Wednesday, August 23, 2023
Saturday, October 1, 2022
27/8"油管的内径为()A、2.441"B、2.875"C、2.0"...
Tuesday, May 14, 2024
Friday, March 29, 2024
31/2"EUE油管(J55,9.3 lb/ft)最佳上扣扭矩值()A、2850 ft.lbB、1710 ft.lbC、2880 ft.lb...
Monday, November 27, 2023
Sunday, May 19, 2024
何谓泵的理论排量?何谓泵的实际排量?造成实际排量与理论排量的差别是什么?...
Tuesday, January 23, 2024
Saturday, November 11, 2023
Friday, September 8, 2023
95/8",47磅/英尺,套管内容积()A、38.2m3/1000mB、19.4m3/1000mC、12.1m3/1000m...
Monday, November 27, 2023
Friday, November 24, 2023
Sunday, March 10, 2024
4-3/4″钻铤卡瓦是()A、7片B、5片C、9片D、12片...
Thursday, April 4, 2024
Wednesday, August 9, 2023
在选择通径规通径时,通径规外径应小于钻杆内径()A、3-4mmB、7-8mmC、10-12mmD、12-14mm...
Friday, March 29, 2024
Monday, November 27, 2023
Sunday, August 20, 2023
柴油机正常工作中排烟的颜色应该是()A、白色B、淡灰色C、淡兰色D、淡黑色...
Tuesday, December 13, 2022