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【单选题】
左心室做功大于右心室的主要原因是( )A.
每搏输出量不同
B.
主动脉和肺动脉平均压不同
C.
体循环和肺循环的循环路径长度不同
D.
左心室和右心室舒张末期压力不同
E.
左心室和右心室舒张末期容积不同
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