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【简答题】
这段时间许多实验使用了显微镜，请回答下面的问题，看看你对显微镜及其操作了解多少． （1）在图上用正确的标注方法，标出镜臂、粗准焦螺旋、转换器、反光镜等四部分的结构． （2）如果目镜上标有10×，物镜上标有40×，则显微镜观察到的物体被放大的倍数是______倍． （3）需要将镜筒下降时，你的眼睛应该注视______． （4）在显微镜的视野中看到一个“上”字，你知道玻片上写的是什么吗？______． （5）观察到物像在显微镜视野的左上方，如果要把物像移到视野中央，你认为应该把玻片向什么方向移动？______．
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