滴定管在使用前应洗涤干净,并用待装的标准溶液洗涤2—3次,以免装...
Tuesday, September 13, 2022
Monday, April 8, 2024
Saturday, February 3, 2024
Tuesday, September 13, 2022
Tuesday, September 13, 2022
Tuesday, September 13, 2022
Monday, June 5, 2023
放在烘箱内烘干的物品应放在里边,不要放在门口并尽量(),以免开门掉下打破,放入的物品要排列整齐,水分大的尽量放在()。...
Sunday, August 6, 2023
pH=4.30该数有三位有效数字,10.65修约只保留一位小数得...
Tuesday, September 13, 2022
Tuesday, September 13, 2022
清洗滴定池应用()洗涤。A、三氯甲烷B、乙醇C、汽油D、丙酮...
Friday, July 14, 2023
Thursday, May 16, 2024
Friday, April 5, 2024
Saturday, February 4, 2023
用于加热的玻璃仪器的受热部位不能有()、()或壁厚不均匀。...
Monday, June 5, 2023
Wednesday, April 3, 2024
Tuesday, September 13, 2022
Tuesday, September 13, 2022
软质玻璃不能加热,耐腐蚀性差、一般的玻璃计量器具用软质玻璃制成。()...
Saturday, December 17, 2022
熔体体积流动速率的代表符号是MVR,单位是Cm3/10min。()...
Tuesday, October 17, 2023