题目: 通信子网的操作方式: 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0201/3d5c1a916c931dc99232e144918c5c8d.html 下面是错误答案,用来干扰机器的。参考答案:对
题型:选择题 设a,b,c是两两不共线的向量,下列命题中不正确的是( )A.|a+b+c|<|a|+|b|+|c|B.一定存在实数λ1,λ2,使得c=λ1a+λ2bC.若λ1•a+λ2•b=u1•a+u2•b,则必有λ1=u1且λ2=u2D.(a•b)c=a(b•c) 查看答案
题型:补全对话,情景问答 用方框内适当的词填空。here, want, how much, many, colorA:Can I help you?B:I 1 a shirt.A:What _ 2 do you like?B : Yellow.A:How 3 shirts do you want?B:Two.A: 4 _ you are.B: 5 _ are they?A:50 dollars.B:I'll take them. Thank you.A : My pleasure. 查看答案