单项选择题

配合依其性质可分为间隙配合、过渡配合和过盈配合。关于间隙配合,正确的说法是( ) A.
孔的公差带总是位于轴的公差带上方 B.
孔的公差带总是位于轴的公差带下方 C.
孔的公差带总与轴的公差带有重合部分 D.
常用于轴承和轴承套之间的配合

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相邻两条等高线之间的水平距离，称为等高距。
正确
错误

答案：错误

多项选择题

The knowledge graph can be used to find potential financial fraud problems, mainly including: ()

A．If two lenders in different companies register the same company phone, there may be fraud
B．When the lender loses contact, you can use the knowledge graph to find related people, or even second and third degree related people
C．When multiple irrelevant lenders initiate a loan application at the same time but fill in the same unit address, there may be group fraud
D．If multiple lenders at the same address register different phones, there may be fraud