题目内容
抗菌药物土霉素与硫酸亚铁合用疗效的变化情况是
2021-12-28
A.两药的疗效均增强
B.两药的疗效均无改变
C.两药的疗效均降低
D.只有土霉素的疗效降低
E.只有硫酸亚铁的疗效降低
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