问题:进出气水封槽高()A、3700㎜B、360㎜C、380㎜D、390㎜...
Tuesday, October 17, 2023
Sunday, September 11, 2022
Friday, September 16, 2022
问题:冰机()巡检一次A、1小时B、两小时C、3小时D、半小时...
Monday, May 29, 2023
问题:几种密度表示方式的大小比较是()。A、真密度>假密度>堆密度B、真密度<假密度<堆密度C、假密度等于堆密度D、真密度>假密度<堆密度...
Thursday, November 10, 2022
问题:如果氨冷器中液氨的水或油含量升高应及时置换,以提升其换热效果。...
Monday, September 18, 2023
问题:变换热水泵在冬季检修时,如需停伴热,应关闭泵冷却水上水及回水阀并...
Sunday, September 11, 2022
问题:第二台气化炉投料要在第一台气化炉的工艺气通过变换单元后进行是为了...
Friday, September 16, 2022
问题:进塔或入罐有窒息性气体的场合,氧气含量应达到()。...
Friday, September 16, 2022
Sunday, September 11, 2022
Saturday, September 10, 2022
Saturday, September 10, 2022
Friday, September 16, 2022
问题:氨合成时,惰性气体的放空位置应选择在惰性气体含量高而氨含量最小的地方。...
Thursday, June 22, 2023
Sunday, September 11, 2022
Friday, September 16, 2022
Sunday, September 11, 2022
Friday, September 16, 2022
Sunday, September 11, 2022
问题:因为低温离心泵是依据介质的温度设计的,所以开车前必须经过预冷操作。...
Monday, June 12, 2023