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β受体阻滞剂:抗心绞痛作用主要是通过阻断拟交感胺类对心率和心肌收缩力受体的刺激作用,减慢心率、降低血压、降低心肌收缩力,减少心肌氧耗量。目前临床常用口服药物有:
An investigation by the committee uncovered()instances in which the institution'sresources had been misused.
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