问题
单项选择题
用显微镜进行观察时，如果转动物镜和移动玻片标本都未能把视野中的污点移走，那么可以断定，污点在（）
A.目镜上
B.物镜上
C.反光镜上
D.玻片标本上
答案
参考答案：A
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用显微镜进行观察时，如果转动物镜和移动玻片标本都未能把视野中的污点移走，那么可以断定，污点在（）
A.目镜上
B.物镜上
C.反光镜上
D.玻片标本上
参考答案：A
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