问题:对离心泵预热的要求是当泵入口温度与泵体温度差小于()时,全开入口...
Saturday, September 10, 2022
Tuesday, September 13, 2022
Wednesday, September 14, 2022
问题:下列选项中,会引起二氧化碳脱除系统发泡的物质有()。A、铁B、乙二醇C、油D、氯化钾...
Monday, February 12, 2024
Tuesday, September 13, 2022
问题:下列关于吸入环氧乙烷中毒的临床症状,说法不正确的是()。A、口重有咸味B、剧烈头痛C、呼吸困难D、恶心、呕吐...
Sunday, February 18, 2024
问题:乙二醇精制塔升降负荷时主要调整的参数是()。A、塔的压力B、再沸器蒸汽量C、回流罐液位D、塔釜温度...
Friday, April 28, 2023
问题:乙二醇精制系统停车后才可以把乙二醇脱醛床切出。()...
Monday, January 29, 2024
Wednesday, September 14, 2022
Wednesday, September 14, 2022
问题:二氧化碳脱除系统正常生产过程中做发泡实验是为了检测()。...
Sunday, September 11, 2022
问题:V105向V106转移抑制剂的顺序()。 ①直接打开液相阀; ②...
Wednesday, September 14, 2022
Saturday, September 10, 2022
Saturday, September 17, 2022
问题:环氧乙烷在空气中的爆炸范围为(体积百分比)()。...
Tuesday, September 13, 2022
问题:发现液态抑制剂污染催化剂应该()。A、降负荷运行B、停氧气混合站C、停循环压缩机D、提高反应温度运行...
Wednesday, October 25, 2023
Wednesday, September 14, 2022
问题:氧化反应器负荷提高时二氧化碳脱除系统应该注意()压力,当达到要求...
Wednesday, September 14, 2022
Tuesday, September 13, 2022
问题:二乙二醇优级品中MEG含量的企标指标为()Kg/Kg。...
Tuesday, September 13, 2022