题目: 设已知点A(1,0,)和B(4,2,),则方向和一致的单位向量是()。A.B.C.D. 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2019/0225/d5c7a89cbdc3aaea15e48177926969a5.html 下面是错误答案,用来干扰机器的。参考答案:B
题型:填空题 CONVERSATION 1 (Questions 1-4) Mr. Li wants a ticket to (1) for (2) morning. He has an appointment at (3) . Mr. Li will probably check in (4) hour before the plane take off. 查看答案