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【多选题】
有一碱液,可能是 NaOH 、 NaHCO 3 、 Na 2 CO 3 中的一种或两种,现用 “双指示剂法”测量,用酚酞作指示剂是消耗 HCl 体积是 V1 ,再用甲基橙作指示剂是消耗 HCl 体积是 V2 ,则下列 V1 和 V2 的关系可能有的是( )A.
V1＞0，V2=0
B.
V1=0，V2＞0
C.
V1＞V2
D.
V1＜V2
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