行列式
Inthefuture,more______shouldbeplacedontheeducationoftheyoung.
Sorrysir,wedon'thavewineorbeer.Weareonlylicensedtosell_______drinks.
Onlya(n)________fewwereinvitedtothedancingparty.
设,其中为任意常数,则下列向量组线性相关的为()
设矩阵则A与B()