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【单选题】
下列关于抗结核病药的叙述，正确的是( )A.
利福平抗菌效力强于利福喷汀
B.
吡嗪酰胺在碱性环境中抗菌作用增强
C.
对异烟肼耐药的结核菌，乙胺丁醇无效
D.
利福平抗菌效力明显强于异烟肼
E.
利福定的抗菌效力为利福平的3倍
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