三角扫描法的原理图如下图所示,其中光源与基线之间的角度β和光源与检测器之间的基线距离B是已知的,可根据几何关系求得测量距离D为( )
A: Bcosβ
B: Bcotβ
C: Bsinβ
D: Btanβ
A: Bcosβ
B: Bcotβ
C: Bsinβ
D: Btanβ
举一反三
- 三角扫描法的原理图如下图所示,其中光源与基线之间的角度β和光源与检测器之间的基线距离B是已知的,可根据几何关系求得测量距离D为( )[img=486x296]17d6045cd1740a5.png[/img] A: Bcosβ B: Bcotβ C: Bsinβ D: Btanβ
- 下列关系正确的有( ) A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/0c9a6360c85f4ff9bdb2b17b576df2e0.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/09c3ca64214040d89eaa8534fa21d895.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/3d88f37ec20c4604a8387c0e1088ad34.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/d48f61b369aa425384b1d565afb5d073.png" />
- 下图哪一个为侗族吊龙舞?( ) A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/b41c210ce1ae4309acbbb37133e5488d.jpeg" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/2e6b6956beea42249f0a848d3b5774c1.jpeg" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/a3975e12b7bf44c39b664bb9a282c41c.jpeg" />
- 下图哪个是赛芦笙?( ) A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/4c1126c934fe423ba279757e3c0e09db.jpeg" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/ebfd2a2c0c424420a49d73856475c011.jpeg" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/f1c495c7da6d47fc9e4166fa12dc5ba3.jpeg" />
- 下列图片中的刺绣图案属于民族风格的是( ) A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/dd062ec1045547259b9430550236644d.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/f226e86915ed402bb41489e4e325d61d.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/89879b964b704c0aa90bb12d73f52f21.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/bd6ae9fac87e4482b5b4bf369728d76b.png" />