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【简答题】
调节望远镜焦距和光轴时,载物台上需要放置 (填棱镜、光栅或平面镜)来完成调节。
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【单选题】米兰被法国和萨丁王国军队占领，奥地利军队被迫撤退后，意大利()地区的民众纷纷要求政府加入萨丁王国的北方联盟。
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