单选题:知识点:心脏病X线表现 二尖瓣狭窄心脏病患者早期X线表现:

题目内容:
知识点:心脏病X线表现
二尖瓣狭窄心脏病患者早期X线表现: A.左心室增大
B.左心房增大
C.右心室增大
D.右心房增大
E.主动脉增宽、扭曲

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