已知向量AB=(4,5),AC=(8,k),若A,B,C三点共线,则k=____ 发布时间:2017-04-13 11:33 │ 来源:www.tikuol.com 题型:填空题 问题: 已知向量AB=(4,5),AC=(8,k),若A,B,C三点共线,则k=______.
题型:填空题 Have you heard of it? Firefighters rushed into a burning house, three of them unfortunately _______ in and ________ their lives.A.catching; lostB.caught; lost C.caught; losing D.catching; losing 查看答案