某人沿着坡度为
的斜坡向上前进了
,那么他的高度上升了( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f506e1c5584ae3c4d287c49f75a752dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e685c2fe2f54fa7947538472cd7caa9.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2023-12-26 19:43:51
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【推荐1】某班计划在劳动实践基地内种植蔬菜,班长买回来
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A.方案1 | B.方案2 | C.方案1或方案2 | D.方案3 |
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【推荐2】如图,点
、
,半径为
的
经过
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,则
点坐标为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/22/b56468ac-5e1a-45f6-8ee8-168a51c4a3cb.png?resizew=161)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12dc66a68aa87fecc9da2332b8d56b50.png)
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【推荐1】如图,小王在山坡上E处,用高1.5米的测角仪EF测得对面铁塔顶端A的仰角为25°,DE平行于地面BC,若DE=2米,BC=10米,山坡CD的坡度i=1:0.75,坡长CD=5米,则铁塔AB的高度约是( )(参考数据:sin25°≈0.42,cos25°≈0.91,tan25°≈0.47 )
![](https://img.xkw.com/dksih/QBM/2020/7/10/2503149715324928/2503792332390400/STEM/2a6d663d033f44a9865a2521cae00bf7.png?resizew=159)
![](https://img.xkw.com/dksih/QBM/2020/7/10/2503149715324928/2503792332390400/STEM/2a6d663d033f44a9865a2521cae00bf7.png?resizew=159)
A.11.1米 | B.11.8米 | C.12.0米 | D.12.6米 |
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【推荐2】国庆期间,小明陪妈妈去爬山,两人走到山脚下A处时,看见A处一标语牌上写着“温馨提示:此山坡的坡度
”,两人沿坡前行,到达C处时,又发现C处标语牌上写着“恭喜你已上升50米”,爱思考的小明很快告诉妈妈:“我们至少走坡路( )米了”.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/27cf20d9-4f05-4fc2-82b5-4685116fd7aa.png?resizew=166)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1852175af2bff405159bc6b574dcb9f.png)
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A.50 | B.120 | C.130 | D.170 |
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