虚线方框内各放置一个透镜两束光通过透镜前后的方�如图所示则a.甲为凹透镜乙为凸透镜b.甲乙都为凸透镜c.甲为凸透镜乙为凹透镜d.甲 Template




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tomski虚线方框内各放置一个透镜两束光通过透镜前后的方�如图所示则a.甲为凹透镜乙为凸透镜b.甲乙都为凸透镜c.甲为凸透镜乙为凹透镜d.甲 coloring