Tuesday, September 13, 2022
Saturday, June 24, 2023
Wednesday, June 28, 2023
Monday, August 28, 2023
问题:3001V扒料机主耙臂长度()米。A、29B、27C、14D、25...
Monday, December 5, 2022
问题:102J压缩机开车前的氮气置换含氧不大于:()A、0.5%B、0.6%C、0.7%D、0.8%...
Thursday, August 24, 2023
Sunday, September 11, 2022
Wednesday, October 18, 2023
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: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
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
Tuesday, September 13, 2022
问题:润滑油的“三级过滤”是指大油桶→白瓷桶→油壶→加油点。...
Sunday, September 11, 2022
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
问题:多级离心泵应稍开出口阀启动泵,以防泵出口超压造成事故。...
Saturday, March 2, 2024
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
Tuesday, September 13, 2022
Wednesday, January 11, 2023