Sunday, August 27, 2023
问题:什么是水泵的允许吸上真空度?为什么要规定这个数值?...
Tuesday, September 13, 2022
问题:新树脂在使用前最好进行预处理,树脂经预处理后,有三大好处:()、()和()...
Tuesday, December 26, 2023
Tuesday, December 26, 2023
Monday, September 25, 2023
Sunday, September 11, 2022
Wednesday, November 22, 2023
Tuesday, September 13, 2022
问题:阴极振打传动装置和振打轴包括哪些?其作用是什么?...
Sunday, September 11, 2022
问题:高速混床输送树脂和阴阳再生罐为把树脂送干净都可在最后用空气输送。...
Tuesday, December 26, 2023
问题:制氢站生产的氢气纯度不小于()%,发电机内氢气纯度不低于()%。...
Friday, April 12, 2024
Friday, January 19, 2024
问题:当碱液溅到皮肤上,首先用1%的醋酸或2%的硼酸中和,然后再用大量清水冲洗。...
Friday, April 12, 2024
问题:注入式离心泵启动前,不必将泵内和进口管内空气排尽。...
Sunday, August 27, 2023
问题:离心泵在运行中如发现表计指示异常,应()。A、先分析是否是表计问题,再就地找原因B、立即停泵C、未超限则不管它...
Friday, January 27, 2023
问题:Z41H-25,DN300中的2.5是指(),300是指()。...
Tuesday, June 13, 2023
Saturday, April 1, 2023
问题:进行锅内处理时,磷酸盐加入量过多或过少会产生哪些不良影响?...
Sunday, September 11, 2022
Sunday, September 11, 2022
问题:管道的弹簧支吊架起承重作用,同时还有()作用。A、减振B、限位...
Friday, January 5, 2024