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【单选题】
非镜面反射()
A.
当界面大于波长时发生
B.
当界面小于波长时发生
C.
发生于类镜面表面
D.
取决于声束角
E.
取决于声速
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】C Psychology is the study of the mind and mental activities. For example, psychologists are interested in why some things make you sad, but others make you happy. They want to know why s...
A.
the mind
B.
the sports ability
C.
the feelings
D.
the whole brain