如图工程上常用钢珠来测量零件上小圆孔的宽口,假设钢珠的直径是10mm,测得钢珠顶端离零件表面的距离为8mm,如图所示.则这个小圆孔的宽口AB的长度是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/192c5c92-3ea3-42ae-8f0a-bdc98a45f2b7.png?resizew=187)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/192c5c92-3ea3-42ae-8f0a-bdc98a45f2b7.png?resizew=187)
A.5mm | B.6mm | C.8mm | D.10mm |
18-19九年级下·全国·单元测试 查看更多[3]
北师大版九年级下第三章 圆 单元检测(已下线)第20讲 圆单元复习-【帮课堂】2022-2023学年九年级数学下册同步精品讲义(北师大版)陕西省西安市碑林区第二十六中学2023-2024学年九年级上学期期末数学模拟试题
更新时间:2019-02-13 12:43:24
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【推荐2】如图,以
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【推荐2】工程上常用钢珠来测量零件上小孔的宽口,如果钢珠的直径为10mm,钢珠上项端离零件上表面的距离为8mm,如图,则这个零件小孔的宽口AB等于( )mm.
![](https://img.xkw.com/dksih/QBM/2022/1/11/2899437426393088/2973477516197888/STEM/fa4eb716-5678-4f33-a4e7-a0a404d7f8dc.png?resizew=217)
![](https://img.xkw.com/dksih/QBM/2022/1/11/2899437426393088/2973477516197888/STEM/fa4eb716-5678-4f33-a4e7-a0a404d7f8dc.png?resizew=217)
A.4 | B.6 | C.7 | D.8 |
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