题目内容
正常人的颈总动脉频谱多普勒显示为( )
2021-10-14
A.频谱宽,频谱波形规整,有频谱窗
B.频谱窄,频谱波形规整,有频谱窗
C.频谱宽,频谱波形不规整,有频谱窗
D.频谱窄,频谱波形不规整,无频谱窗
E.频谱宽,频谱波形不规整,无频谱窗
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