【单选题】设z=1-i(i为虚数单位), . z 是z的共轭复数,则 z . z + 2 z 的值为( )
【单选题】While I was waiting for her, I killed time ______ looking in the show windows.
【简答题】复数 z= 2i 1-i ,其共轭复数为 . z ,则 z . z -z+1 =______.
【单选题】While I was waiting for her, I killed time__________ looking in the show windows.A.by###SX
A.
While I was waiting for her, I killed time__________ looking in the show windows. A.by
【简答题】已知复数z= 1-i 1+i +1,则 . . z . =______.
【单选题】— Would you mind my little sister while I am away? — Of course not. [ ]