这张设计图说明了广东科学中心的标志与字体既能上下组合又能左右组合。（ ）https://image.zhihuishu.com/zhs/onlineexam/ueditor/202006/33c3aa2be15a49cebbd7f4a6788d73bf.png
举一反三
- 以下哪个家具是衣架。 A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202006/02285e456e2b4861a7f6319515f836c4.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202006/19a30f3b6d6846ceab656f4ea0e7eb9d.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202006/e14dbac89fea4066a9ae7bbd6d1dc080.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202006/612475075e2d434aac0d404ce94395ea.png" />
- 设二极管的端电压为U，则二极管的电流方程为（ ） 。 A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202006/8fc1bd7f467e423a9abedfbcf36b63bf.png"> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202006/96c0065cd93f445abe2243c79b5a11f5.png"> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202006/e7babcc7dd7c478bbabd8438754ba07b.png"> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202006/dc06cb808c2a4d20b75fa70ba39feefe.png">
- 给定下述系统的差分方程，则__是非因果系统。 A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202006/df1ece1947ea4ec394f9801bb6a8623e.png"> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202006/4963ffe14fd64ba983b60ad14bd498e2.png"> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202006/3c6bc338aedb4d04baa637de5d7d9506.png"> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202006/53dbdd529a5443188250b588e1de8d36.png">
- 以下四个图所示的力三角形，哪一个图表示力矢R是F<sub>1</sub>和F<sub>2</sub>两力矢的合力矢量 （ ） A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202006/e5882668f0e84059a814aa855a51c3f6.png"/> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202006/7ce37cfeee134a2a8e6cef983a8c334e.png"/> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202006/3c0b7ba6eaa14d0597864d403938923d.png"/> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202006/bd13812c38674e828a05477ef3fa6c61.png"/>
- 下图中新天津生态城的标志与字体上下组合中，标志高度、标志与字体之间间距、字体组合高度这三者的比例标准是（ ）。https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/ac2edc1ae07a47aeb6be1cb812b82d10.png