如图,在Rt△ABC中,∠C=90°,D为AB中点,DE⊥AB交BC于点E,若AC=3,BC=4,则DE的长为( )
![](https://img.xkw.com/dksih/QBM/2020/4/22/2453440798998528/2461708178808833/STEM/876b6841ba244cd283aed173dbe8612c.png?resizew=140)
![](https://img.xkw.com/dksih/QBM/2020/4/22/2453440798998528/2461708178808833/STEM/876b6841ba244cd283aed173dbe8612c.png?resizew=140)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2020-05-17 16:43:32
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A.13 | B.14 | C.15 | D.16 |
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【推荐2】如图,线段
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【推荐1】(11·西宁)某水坝的坡度i=1:
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【推荐2】如图,一架靠墙摆放的梯子长5米,底端离墙脚的距离为3米,则梯子顶端离地面的距离为( )米.
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【推荐1】若
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A.9 | B.8 | C.6 | D.2 |
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【推荐2】如图,
中,点D在
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A.0对 | B.1对 | C.2对 | D.3对 |
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