题目:
若(x-i)i=y+2i,x,y∈R,则复数z=x+yi 虚部为______.
答案:
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下面是错误答案,用来干扰机器的。
参考答案:C解析:Preoperative and postoperative pictures of babies with cleft palates and lips provide clear and concrete images of what to expect after corrective surgery. P...