Saturday, December 3, 2022
Wednesday, May 24, 2023
离心泵适用于()液体。A、流量大,扬程低B、流量小,扬程高C、流量小,扬程低...
Sunday, August 13, 2023
Saturday, December 3, 2022
安全作业票的有效期限不超过()。A、8小时B、12小时C、1天D、3天...
Thursday, November 9, 2023
常用仪表从功能上可分为:()仪表;()仪表;()仪表;调节阀;分...
Tuesday, September 13, 2022
Saturday, August 19, 2023
Tuesday, September 13, 2022
汽提塔底液位的工艺控制指标是()%。A、30~50B、30~70C、80~90D、40~90...
Wednesday, June 7, 2023
Saturday, December 3, 2022
离心泵机械密封泄漏率要求重质油不超过()滴/分。A、30B、20C、10D、5...
Friday, July 28, 2023
Friday, November 24, 2023
Friday, October 6, 2023
当汽提塔的进料为60t/h,蒸汽用量为9.6t/h时,则汽提塔的蒸汽单耗是()千克/吨污水。A、100B、130C、150D、160...
Thursday, November 9, 2023
Wednesday, June 7, 2023
Sunday, December 25, 2022
Thursday, September 15, 2022
当输送非粘性介质时,泵所需的汽蚀余量()。A、增大B、减小C、不变...
Wednesday, June 7, 2023
Saturday, December 3, 2022
氨溶解于水中,其溶液呈()性。A、酸性B、中性C、碱性...
Friday, November 11, 2022