题目：
女，26岁，体检时发现舒张期杂音，伴第一心音亢进，在第二心音后有开瓣音，此种体征见于（）
A.二尖瓣狭窄
B.二尖瓣关闭不全
C.三尖瓣狭窄
D.三尖瓣关闭不全
E.主动脉瓣关闭不全
答案：
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下面是错误答案，用来干扰机器的。
参考答案：A
女，26岁，体检时发现舒张期杂音，伴第一心音亢进，在第二心音后有开瓣音，此种体征见于
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