已知任意两个非零向量m、n,向量OA=m+n,OB=m+2n,OC=m+3n,则 发布时间:2017-04-13 18:30 │ 来源:www.tikuol.com 题型:填空题 问题: 已知任意两个非零向量m、n,向量OA=m+n,OB=m+2n,OC=m+3n,则A、B、C三点______构成三角形(填“能”或“不能”)
题型:填空题 Ordinary people are now lacking of the scientific knowledge about nutrition.A. short with B. are absent ofC. lack in D. are deficient on 查看答案