Saturday, June 24, 2023
问题:下列备件规格属于804V皮带运输机上的备件有()。...
Tuesday, September 13, 2022
问题:尿素装置高压氨泵曲轴箱的低油压联锁值为0.4MPa。...
Tuesday, May 30, 2023
Saturday, March 2, 2024
问题:离心泵运转中流量下降的原因有()。A、泵转速降低B、空气漏入吸入管C、排出管路中阻力过大D、叶轮口环磨损、流量损失过大...
Thursday, January 26, 2023
Wednesday, October 18, 2023
问题:压缩机排气量显著降低或突然降低可能原因()。A、汽阀漏气B、转数升高...
Tuesday, May 30, 2023
Wednesday, June 28, 2023
问题:104J/JS出口压力设计值为()MPA。A、15.5B、15.9C、16.4...
Thursday, August 24, 2023
问题:尿素合成塔均采用碳钢内衬超低碳不锈钢板或钛板结构,主要是为了节省设备投资。...
Wednesday, January 11, 2023
Wednesday, January 11, 2023
问题:3001V扒料机主耙臂长度()米。A、29B、27C、14D、25...
Monday, December 5, 2022
问题:离心泵滑动轴承允许温度.()A、小于65℃B、小于70℃...
Saturday, March 2, 2024
Saturday, February 3, 2024
问题:离心泵带负荷启动()。A、易烧坏电机B、易损坏轴承...
Sunday, November 20, 2022
问题:低变触媒活性组份是()A、铁B、镍C、铜D、氧化锌...
Wednesday, June 21, 2023
Wednesday, January 11, 2023
Tuesday, September 13, 2022
问题:当离心泵输送液体的重度增大时,其扬程()。A、升高B、不变C、下降...
Sunday, October 15, 2023
Friday, November 25, 2022