HewasborninGermany,buthehasmadeChinahis.()A.familyB.addressC.houseD.home
He was born in Germany,but he has made China his ______.( )
A. family
B. address
C. house
D. home
This is my bedroom.There is a desk in it.( )the d 2020-05-16 …
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设A,B是三阶方阵,若满足等式A+BA=B,求(A-I)^(-1)是什么?我是这样算的,BA-B= 2020-06-18 …
i是虚数单位,若集合S={-1,0,1},则()A.i属于SB.i的二次方属于SC.i的i是虚数单 2020-07-30 …
一道挺难的数学题i*i=-1则x*x=-1可变为x=+i或-ii还具有以下性质:i=ii*i=-1i 2020-11-01 …