名校
1 . 正三角形
的边长为
,如图,
为其水平放置的直观图,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c78d0ab561d0c9bb9099772c596af8bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/17/ebe194a5-c7d8-4b1c-a079-eac6bd423774.png?resizew=188)
A.![]() |
B.![]() ![]() |
C.![]() ![]() |
D.![]() ![]() |
您最近一年使用:0次
2 . 某三棱锥的三视图如图所示.则该三棱锥内切球的半径是( )
![](https://img.xkw.com/dksih/QBM/2021/5/20/2725216735764480/2726571603165184/STEM/d7dd0228-9841-485c-9f9f-e614c07536b1.png?resizew=249)
![](https://img.xkw.com/dksih/QBM/2021/5/20/2725216735764480/2726571603165184/STEM/d7dd0228-9841-485c-9f9f-e614c07536b1.png?resizew=249)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
3 . 设平面直角坐标系中有线段
,其对应的直观图上的线段为
,若
,则
的斜率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc890342ba48792f572f99e3f8c033a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9f085b713f579e479f4c7c33f147fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次