对于向量组alpha_1,alpha_2,ldots,alpha_m，若0alpha_1+0alpha_2+ldots+0alpha_m=0，则该向量组()。

已知向量组alpha_1, alpha_2, alpha_3, ldots线性无关，则A 向量组alpha_1, alpha_1 - alpha_2, alph

已知向量组 alpha_1, alpha_2, ..., alpha_m 线性相关，则（）A. 该向量组的秩小于 $m$；B. 该向量组的任何部分组必线性相关.

设有向量组 alpha_1, alpha_2, ldots, alpha_m，若对于任意一组不全为零的实数 k_1, k_2, ldots, k_m，都有 k_

已知向量组alpha_1, alpha_2, alpha_3线性无关，则A 向量组alpha_1 - alpha_2, alpha_2 - alpha_3, a

设向量组 alpha_1 = (1,1,1), alpha_2 = (0,1,2), alpha_3 = (1,0,-1)，那么该向量组的秩为:A. 3B

设向量组 alpha_1 = (1,1,1), alpha_2 = (0,1,2), alpha_3 = (1,0,-1)，那么该向量组的秩为:A. 2B

设向量组 alpha_1, alpha_2, alpha_3线性无关，判断向量组 beta_1 = alpha_1 + alpha_2、beta_2 =

设向量组 alpha_1, alpha_2, alpha_3, alpha_4, alpha_5秩为 3，且满足 alpha_1 + alpha_3 - a

向量组 alpha_2, alpha_4, alpha_5 线性无关，则整体向量组 alpha_1, alpha_2, alpha_3, alpha_4, al

设向量组 alpha_1, alpha_2, alpha_3, alpha_4，其中 alpha_1, alpha_2, alpha_3 线性无关，则必有（）A