在矩阵，，中，______是奇异矩阵，______是非奇异矩阵．

A.174.24.96:6088/Latex/latex.action?latex=QT1cbGVmdFtcYmVnaW57YXJyYXl9e2NjfTEmMlxcMiY0XGVuZHthcnJheX1ccmlnaHRd'
B.174.24.96:6088/Latex/latex.action?latex=Qj1cbGVmdFtcYmVnaW57YXJyYXl9e2NjY30xJjIgJiAzXFwwJjEgJjJcXDAmMCAmM1xlbmR7YXJy%0D%0AYXl9XHJpZ2h0XQ%3D%3D'
C.174.24.96:6088/Latex/latex.action?latex=Qz1cbGVmdFtcYmVnaW57YXJyYXl9e2NjfTAmIDdcXDEmLTJcZW5ke2FycmF5fVxyaWdodF0%3D'

【参考答案】

A；B$C