若向量a,b,c满足a∥b且a⊥c,则c(a+2b)=______. 发布时间:2017-04-13 20:49 │ 来源:www.tikuol.com 题型:填空题 问题: 若向量a,b,c满足a∥b且a⊥c,则c(a+2b)=______.
题型:填空题 --- What should I do, doctor? --- healthy, you should take more exercise.A.KeepB.To keepC.KeepingD.To keep out 查看答案