Saturday, September 10, 2022
问题:用100mL容量瓶配制溶液,当液面凹位与刻度线相切时,其体积应记...
Tuesday, September 13, 2022
Saturday, September 10, 2022
Tuesday, September 13, 2022
Tuesday, September 13, 2022
Tuesday, September 13, 2022
Tuesday, October 11, 2022
Tuesday, September 13, 2022
问题:对微库仑仪滴定池的维护工作包括()。A、滴定池的清洗B、电极的清洗C、滴定池的保存D、操作滴定池...
Friday, November 10, 2023
Saturday, September 10, 2022
Saturday, September 10, 2022
Tuesday, September 13, 2022
问题:酸度计中的复合电极是由()和()电极构成,其中,玻璃电极是指示电...
Saturday, September 10, 2022
问题:标准对照法的条件是()。A、工作曲线过原点B、工作曲线不过原点C、标准样品和待测样品浓度应接近D、标准样品和待测样品测定条件相同...
Wednesday, September 20, 2023
Wednesday, March 22, 2023
问题:下列方法中()可以减少分析中的偶然误差。A、进行空白试验B、进行对照试验C、仪器进行校正D、增加平行测定次数...
Monday, May 22, 2023
Tuesday, September 13, 2022
Tuesday, September 13, 2022
问题:悬浮物是指水样通过滤膜,截留在滤膜上并于()℃烘干至恒重的固体物...
Tuesday, September 13, 2022
Tuesday, September 13, 2022