使用显微镜观察时，低倍镜下看到清晰的图象，再换用高倍镜观察，操作的正确顺序是 ①调节粗准焦螺旋 ②调节细准焦螺旋 ③转动转换器 ④将观察目标移到视野中央．_刷题宝

题干

使用显微镜观察时，低倍镜下看到清晰的图象，再换用高倍镜观察，操作的正确顺序是（）

①调节粗准焦螺旋 ②调节细准焦螺旋 ③转动转换器 ④将观察目标移到视野中央．

A：③①②

B：④③②

C：④③①②

D：③④①②

上一题下一题 0.0难度选择题更新时间:2019-10-31 01:10:45

答案(点此获取答案解析）

B

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