[问答题,简答题] 脱隔离衣的步骤

用葡聚糖凝胶色谱分离下列化合物，最先被洗脱流下来的是（） ["大黄素","番泻苷B","大黄酚","紫草素","茜草素"] 番泻苷A中两个蒽酮母核的连接位置是（） ["C₁-C₁","C₂-C₂","C₉-C₉","C₁₀-C₁₀","C₉-C₁₀"] 穿无菌手术衣步骤 下列乙酰化试剂，酰化能力最强的是（） ["冰乙酸","醋酐","浓硫酸","乙酸酯","乙酰氯"] 穿隔离衣步骤 脱隔离衣的步骤