Thursday, September 22, 2022
Friday, September 16, 2022
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Thursday, September 22, 2022
Sunday, September 18, 2022
问题:单选题洋地黄毒苷和地高辛均以Keller-Killiani反应作为鉴别,样品加三氯化铁冰醋酸溶液,显()A 橙红色B 紫蓝色C 血红色D 绿色E 靛蓝色...
Saturday, December 10, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
Tuesday, September 20, 2022
Thursday, September 22, 2022
Wednesday, September 21, 2022
问题:与亚硝基铁氰化钠反应生成蓝紫色的阴离子复合物()...
Thursday, September 22, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
Wednesday, September 21, 2022
Thursday, September 22, 2022