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最新问答: 设A=[2,1,-2;5,2,0;3,a,4],B是3阶非零矩阵,且AB=0,则a= can you help kids w_____swmming mary can play the t______ an The recorder has been stolen.Wang spent all the money on it. 炎字旁的字有哪些 地球陆地总面积相当于海洋总面积的41%,北半球的陆地面积相当于其海洋面积的65%,那么,南半球的陆地面积相当于其海洋面积 I would rather he ____at home now.A were B who C has been Dw 小学五年级学英语用什么工具好,请知道的朋友说说, The meaning of life 人生的意义 Is it true ____ he has suggested is appreciated by his manag 已知f(x)为奇函数,x>0时,f(x)=sin2x+cosx,则x<0时,f(x)为( ) 由1.2.3.4.5.6.7.8八个数字中,取五个做成 五位数,其一三五位限用基数,问可作几个不用的五位数 i am always late for my morning class,because of all the tra ”荏苒”念什么, 6月过后是7月 用英文怎么说 summer前用什么介词?注:这个句子是It,s very hot _____ summer in Nanjing. 梯形ABCD中,AD//BC,AB=DC, 已知,在两个同心圆中,大圆的弦AB,AC分别与小圆相切于D,E.求证:DE//BC且DE=1/2BC 枯木也会在逢春 的上一句是什么 如图所示为手机电池,铭牌上标的正常工作的电压为3.7V,电池容量为800mA•h,如图甲.此电池在充满电时贮存的电能为_ 某品牌计算机在九州商城原来售价3000元.商场现在搞促销活动,该品牌计算机先降价5%.后来又提价5%.
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