题目内容

用酸碱滴定法测定阿司匹林含量时，溶剂为__，滴定液为，指示终点的方法为.

A. 中性乙醇；氢氧化钠滴定液；酚酞指示液指示终点；
B. 水；氢氧化钠滴定液；酚酞指示液指示终点；
C. 水；氢氧化钠滴定液；永停滴定法指示终点；
D. 中性乙醇；氢氧化钠滴定液；永停滴定法指示终点；

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