Thursday, November 10, 2022
问题:831KF万通快速水分测定仪所用的测定水分的范围是多少?
Tuesday, May 14, 2024
Tuesday, September 13, 2022
Tuesday, September 13, 2022
Tuesday, January 16, 2024
Saturday, September 10, 2022
Tuesday, September 13, 2022
Saturday, July 29, 2023
Tuesday, September 13, 2022
问题:在甲醇高锰酸钾试验中,试剂水要加入足够量的稀高锰酸钾溶液并且成稳定的粉红色备用,为什么?
Saturday, February 4, 2023
Friday, July 14, 2023
Saturday, September 10, 2022
Tuesday, September 13, 2022
Monday, February 26, 2024
问题:在测定PP熔体质量流体速率时,指数仪的温度应控制在210±0.5℃。()
Tuesday, September 13, 2022
问题:在一定测定次数范围内,分析数据的可靠性随测定次数的增多而增加,即平行测定的次数越多,其结果的算术平均值越接近于真实值。()
Sunday, November 6, 2022
Friday, April 5, 2024
问题:化验室的位置最好距离生产车间、锅炉房、交通要道稍远些,以减少车间排出的有害气体及烟囱和与路上灰尘的侵袭,避免震动。()
Wednesday, October 19, 2022
Saturday, September 10, 2022
Saturday, February 4, 2023