Thursday, September 22, 2022
汽包内的旋风分离器和百叶都是汽水分离装置,其中旋风分离器是()次分离元件,百叶窗是()次分离元件。...
Thursday, September 22, 2022
强碱性阴树脂氧化变质后,表现出来的是()和()逐渐减少,且后者速度大于前者。...
Thursday, September 22, 2022
Tuesday, September 20, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
离子交换器中排装置的支管上套的涤纶网套宜选用()的为好。...
Thursday, September 15, 2022
Thursday, September 22, 2022
零件在高速旋转时,由于()偏移,将产生一个很大的离心力,就会引起机器的()。从而使零件的寿命、机器的工作精度显著降低。...
Friday, September 16, 2022
Thursday, September 22, 2022
单选题工业盐酸带黄色的原因是含有()杂质。A CL-B Fe3+C Na+...
Monday, July 17, 2023
用邻菲罗啉法测水样中铁时,加氨水调PH值前,必须先加入邻菲罗啉,为什么?...
Sunday, September 18, 2022
填空题油泥是指油中具有形成沉淀物倾向的()和()的聚集体。...
Thursday, December 28, 2023
Friday, September 16, 2022
电力用油中,酸性成分的来源是什么?反映油中酸性特质含量的指标有哪些?...
Thursday, September 22, 2022
Thursday, September 22, 2022
Thursday, September 15, 2022
某厂一级除盐周期制水量1320t,阴床再生用28%(密度1.31)NaOH600L,已知阴床进水平均酸度2.26mmol...
Friday, September 16, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022