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①→②→③→④ ⑤→④→②→③ ②→①→⑤→④ ④→⑤→③→②
①→②→③→④ ④→⑤→③→② ②→①→⑤→④ ⑤→④→②→③
①→②→③→④ ④→⑤→③→② ②→①→⑤→④ ⑤→④→②→③
①→④→⑤→③ ①→④→②→③ ⑤→①→④→③ ⑤→④→②→③
①→②→③→④ ④→③→②→⑤ ②→①→⑤→④ ⑤→④→②→③
①→②→③→④ ④→⑤→③→② ②→①→⑤→④ ⑤→④→②→③
①→②→③→④ ④→⑤→③→② ②→①→⑤→④ ⑤→④→②→③
①→②→③→④ ⑤→④→②→③ ②→①→⑤→④ ④→⑤→③→②
①→②→③→④ ④→⑤→③→② ②→①→⑤→④ ⑤→④→②→③
①→④→⑤→③ ①→④→②→③ ⑤→①→④→③ ⑤→④→②→③
转为 ，其正确的操作步骤是：①移动载玻片；②调节光圈和反光镜；③转动转换器；④转动细准焦螺旋；⑤转动粗准焦螺旋。
A.①③②④B.②③④⑤ ④③①⑤ ③②⑤④
①→②→③→④ ④→⑤→③→② ②→①→⑤→④ ⑤→④→②→③
①→②→③→④ ⑤→④→②→③ ②→①→⑤→④ ④→⑤→③→②
①→②→③→④ ④→⑤→③→② ②→①→⑤→④ ⑤→④→②→③ 
①→②→③→④ ④→⑤→③→② ②→①→⑤→④ ⑤→④→②→③
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