皮皮学，免费搜题
登录
搜题
【单选题】
关于镜面伪像的描述，下列说法正确的是A.
镜面伪像为多途径反射所形成
B.
声像图上，出现镜面伪像时膈下为肝实质回声实像，膈上为对称性的肝实质回声虚像
C.
虚像总是位于实像的深方
D.
肋缘下向上扫肝和横膈时，声束斜射到声阻抗差很大的膈肺界面时可产生镜面伪像
E.
以上说法均正确
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】The police were seeking more information to find out _____ the rich merchant.
A.
who was it that killed
B.
who it was that killed
C.
it was who killed
D.
who was it killed
【单选题】There are about 70 people ______ in the accident.
A.
were killed
B.
who killed
C.
killing
D.
killed
【简答题】在调制技术中将频率调制和相位调制称之为 调制。