如下图所示,abcd为物镜和目镜长度,ef为观察时物镜与标本其切片距

如下图所示,abcd为物镜和目镜长度,ef为观察时物镜与标本其切片距离大小。如获得最大放大倍数的观察效果,其正确组合是

Aace             Bbdf                       Cbce                    Dbde

答案

D

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