多项选择题

For any given matrix A, there exists a unique matrix M such that some conditions below are satisfified. ( )
A、AMA=A
B、AM与MA均为Hermite对称矩阵
C、MAM=A
D、MAM=M

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单项选择题

小提琴协奏曲《梁祝》被誉为（）。

A.中华民族的交响乐
B.中国的打击乐
C.小提琴的经典
D.中华民族的进行曲

When you're taking in any information, it's good to think about the factors that might impact it.

答案：正确