问题:一段转化炉与二段转化炉内发生的主要反应特点()A、吸热B、体积增大C、放热D、体积缩小...
Thursday, March 20, 2025
Wednesday, March 5, 2025
Thursday, January 23, 2025
问题:3811J通风机是()式风机。A、离心B、向心C、平移...
Thursday, October 17, 2024
Sunday, March 23, 2025
Thursday, February 13, 2025
Tuesday, May 2, 2023
问题:简述蒸汽质量不合格,例如锅炉水中混入了循环水,对汽机是否有影响?...
Thursday, February 13, 2025
问题:自动调节系统包括哪些仪表?它们之间的信号传递关系是什么?...
Friday, April 11, 2025
Thursday, March 20, 2025
问题:精馏塔上塔回流液在进塔之前为什么要经过冷器的过冷?...
Thursday, October 10, 2024
问题:用热偶测量温度,电偶的mV值与被测温度及环境温度有什么关系?...
Friday, April 11, 2025
Friday, April 11, 2025
Thursday, March 20, 2025
Friday, October 27, 2023
Thursday, March 20, 2025
问题:在测量原水的流量时,如果孔板前后的管道结垢使管道内径变小,会对测量结果产生什么影响?为什么?...
Saturday, December 7, 2024
Tuesday, September 13, 2022
问题:尿素装置的不锈钢静止设备及管线清洗介质有何要求?...
Saturday, December 7, 2024
问题:袋式袋滤器有()套线性促动器A、4B、3C、2D、6...
Thursday, October 10, 2024