Friday, September 16, 2022
理想沉淀池应符合哪些条件?其沉淀速率与池子的深度、长度、表面积关...
Friday, September 16, 2022
Sunday, September 11, 2022
Friday, September 16, 2022
用冷原子吸收分光光度法测定水中总汞时,水样消解后,需要用氯化亚锡...
Sunday, September 11, 2022
Friday, September 16, 2022
Friday, September 16, 2022
Friday, September 16, 2022
测定大气中二氧化硫的国家标准分析方法是(),为避免使用毒性较大的...
Monday, September 12, 2022
Friday, September 16, 2022
电位滴定法测定水中氯化物时,由于是沉淀反应,因此在电位滴定时搅拌...
Monday, September 12, 2022
Monday, September 12, 2022
液氯(氨)加药间的集中采暖设备宜用()。如采用火炉时,火口宜设在...
Friday, September 16, 2022
平流沉淀池进水为何采用穿孔隔墙?出水为什么往往采用出水支渠?...
Friday, September 16, 2022
Friday, September 16, 2022
Monday, September 12, 2022
采矿权人应当在采矿许可证有效期内或者有效期届满,向原发证机关申请...
Monday, September 12, 2022
在水中,无机物的主要迁移转化方式是沉淀-溶解,而有机物真正的分解...
Sunday, September 11, 2022
Sunday, February 26, 2023
当跌水、淋水、喷水、板条式曝气塔、接触式曝气塔或叶轮表面曝气装置...
Friday, September 16, 2022