已知bg糖水中有ag糖(b>a>0),若再添上mg糖(n>0),则糖水就变甜了,试根据此事提炼一个不等式:( )。
The speaker ______ have criticized the paraprofessionals, knowing full well that they were seated in the audience.
A.should not to
B.must not
C.ought not to
D.may not
设A是3阶矩阵,α1=(1,0,1)T,α2=(1,1,0)T是A的属于特征值1的特征向量,α3=(0,1,2)T是A的属于特征值-1的特征向量,则( )。
A.α1-α2是α的属于特征值1的特征向量B.α1-α3是α的属于特征值1的特征向量C.α1-α3是α的属于特征值2的特征向量D.α1+α2+α3是α的属于特征值1的特征向量