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【简答题】
05mm精度的游标卡尺，其主尺每格（），副尺每格（）。
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【单选题】_______ surprised me most was ________ such a little boy of seven could play the violin so well.
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B.
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【多选题】在薄层色谱分析中,采用以下哪些方法可减少边缘效应
A.
层析槽有较好的气密性
B.
在层析槽内壁贴上浸湿展开剂的滤纸条
C.
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D.
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E.
减小薄层的厚度
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