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若(1+2ai)i=1-bi,其中a、b∈R,i是虚数单位,则|a+bi|=( ...
若(1+2ai)i=1-bi,其中a、b∈R,i是虚数单位,则|a+bi|=( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124148874600808/SYS201310251241488746008001_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124148874600808/SYS201310251241488746008001_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124148874600808/SYS201310251241488746008001_ST/2.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025124148874600808/SYS201310251241488746008001_ST/3.png)
考点分析:
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