A、<p><span style="font-size: 10.5pt; font-family: 宋体;">减少肾素分泌，抑制肾素<span lang="EN-US">-</span>血管紧张素<span lang="EN-US">-</span>醛固酮系统</span></p>
B、<p><span style="font-size: 10.5pt; font-family: 宋体;">减少去甲肾上腺素释放</span></p>
C、<p><span style="font-size: 10.5pt; font-family: 宋体;">抑制<span lang="EN-US">Ca<sup>2+</sup></span>内流，松弛血管平滑肌</span></p>
D、<p><span style="font-size: 10.5pt; font-family: 宋体;">减少心输出量</span></p>
E、<p><span style="font-size: 10.5pt; font-family: 宋体;">阻断中枢β受体，使兴奋性神经元活动减弱</span></p>