题目内容
左心室增大的X线表现为
2022-02-25
A.后前位左室段延长，心尖下移
B.搏动点上移
C.左前斜位心后缘向后下突出，心后间隙 变窄
D.右前斜位常无明显改变
E.侧位见心后间隙缩小
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