设向量a=(2,0),b=(1,1),则下列结论中正确的是( ) A.|a|=|b 发布时间:2017-04-15 06:39 │ 来源:www.tikuol.com 题型:选择题 问题: 设向量a=(2,0),b=(1,1),则下列结论中正确的是( )A.|a|=|b|B.a•b=12C.a∥bD.(a-b)⊥b
题型:选择题 They wouldn’t agree to sell the house to us at the same price _____ they had promised, _____ was rather disappointing.A.which ; asB.as ; thatC.as ; whichD.that ; that 查看答案