主动脉在维持舒张压中起重要作用，主要是由于主动脉( )-湖北继续教育网网校

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[单选题]主动脉在维持舒张压中起重要作用，主要是由于主动脉( )

A口径大

B管壁的扩张性和弹性

C管壁厚

D血流速度快

E对血液的摩擦阻力小

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