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【单选题】
在分光计实验中,要调节望远镜及我物台平面使之都垂直于分光计主轴,用自准直法调节时发现三棱镜两面的反射十字像的位置分别如图,下列说法正确的是( )。【图片】
A.
载物台不垂直主轴
B.
望远镜光轴不垂直主轴
C.
载物台和望远镜光轴都不垂直主轴
D.
载物台和望远镜光轴都垂直主轴
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A.
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B.
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C.
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D.
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difference
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A.
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B.
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C.
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D.
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A.
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B.
晕厥或晕针
C.
断针
D.
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A.
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B.
错误
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A.
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B.
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C.
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D.
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A.
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B.
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C.
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D.
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E.
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