如图,将一根笔直的竹竿斜放在竖直墙角
中,初始位置为
,当一端
下滑至
时,另一端
向右滑到
,则下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/2020/8/14/2527773616611328/2530511898370048/STEM/dfa8ad21067c41dab2d99ebcc6655214.png?resizew=134)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3557809c066e68395b614535a7675e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b977da2be0fc44742bd313eea1c30997.png)
![](https://img.xkw.com/dksih/QBM/2020/8/14/2527773616611328/2530511898370048/STEM/dfa8ad21067c41dab2d99ebcc6655214.png?resizew=134)
A.下滑过程中,始终有![]() |
B.下滑过程中,始终有![]() |
C.若![]() ![]() |
D.![]() ![]() |
更新时间:2020-08-18 15:22:32
|
【知识点】 全等三角形综合问题
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单选题
|
较易
(0.85)
【推荐1】下列命题中,其逆命题是真命题的是( )
A.对顶角相等 | B.全等三角形的对应角相等 |
C.两直线平行,内错角相等 | D.正方形的四个角都相等 |
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单选题
|
较易
(0.85)
【推荐2】题目:“如图,
与
相交于点C,且
,
,点P从点A出发,沿
方向以
的速度运动,点Q从点D出发,沿
方向以
的速度运动,P、Q两点同时出发,当点P到达点A时,P、Q两点同时停止运动,设点P的运动时间为
.连接
,当线段
经过点C时,求t的值.”对于其答案,甲答:
,乙答:8s,则正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdc7f5e61bbff0310b47f40f5a3f709d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cee49e97546d466ba3ee630e08cdc3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d384993c07cee80d3cabef18b9416d5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d989a128e30a701dfff5592476a76bab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c74c393a2426ead4c230c913882fe5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5631e6ec24d3d67bf4592313b6b3f4f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41fb80b591b497d8d7a6d8592160de44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f6e9c99baddd0c822f73a9ddbd54b20.png)
A.只有甲答的对 |
B.只有乙答的对 |
C.甲、乙答案合在一起才完整 |
D.甲、乙答案合在一起也不完整 |
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