对图示对称体系作几何组成分析。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/a45ebfa1bc0347938e1ac84932c90f08.jpg
举一反三
- 图示体系是几何_____体系。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/966a05e0f7a54e8aae0f6e03aadaca87.jpg
- 如图所示体系是几何不变体系。（ ）http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/9c879492455f42efb9f884c6a9d2fbcb.jpg
- 对于任意n阶方阵A，B，下列是对称方阵的都是 A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/1a43a777df9b4731b424fb37e661e405.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/2a440183f9f2423c88b1100af99446f0.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/43b6ddb36a7d47e2903b409b8f9d58ef.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/06fa8f644c2544998e11eb1c376b7433.png" />
- 对称三相电路的有功功率的计算公式正确的是( )。 A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/3306ee5c6c384986b082f95c444c3e4d.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/d59fad97c5ea4de786230488e1333ec7.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/480713659b00439c983040f4d91364e9.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/c475fb2fc3494891960d403d1e6b92d0.png" />
- 下列哪味中药为桂枝 A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/1ecec46f5cb24d1fba6eda07816fff21.JPG"> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/6630610aa0cf4408832ccd382a3263e2.JPG"> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/862f3e2a8fb7477cba0e4142b90606da.JPG"> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/fb77e5e5386c43739e4ef959765e0dcd.jpg">