问题
单项选择题 A型题
四肢血管正常的多普勒频谱波形是（）。
A.单相波
B.双相波和单相波
C.双相波
D.三相波
E.单相波和三相波
答案
参考答案：D
解析：四肢血管正常的多普勒频谱波形是三相波。
搜题请搜索小程序“爱下问搜题”
四肢血管正常的多普勒频谱波形是（）。
A.单相波
B.双相波和单相波
C.双相波
D.三相波
E.单相波和三相波
参考答案：D
解析：四肢血管正常的多普勒频谱波形是三相波。
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