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【单选题】
硝酸甘油治疗心绞痛的药理学基础是
A.
增强心肌收缩力
B.
增强心肌耗氧量
C.
改善心肌供血
D.
松弛血管平滑肌
E.
扩张冠状动脉
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【单选题】可逆反应A(g)+3B(g) ⇌2C(g)+ 2D(s)为一放热反应,达到平衡后,要使正反应速率加快,同时平衡向正反应方向移动,可采取的措施是
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