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(2008•贵阳)如果两个相似三角形的相似比是1:2,那么它们的面积比是( ) ...
(2008•贵阳)如果两个相似三角形的相似比是1:2,那么它们的面积比是( )
A.1:2
B.1:4
C.1:
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D.2:1
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