设，为n阶方阵的伴随阵、逆矩阵，则（ )https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/9642423ef3774c65b6e247e2ce40b223.png
举一反三
- 设，矩阵，，其中E为n阶单位阵，则BC等于().http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/639791db15504432a1d753ce6bddbdfa.png
- 体系处于<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/7bae90aad0f0442d9d6adf4ff4c69c2c.png" />状态,则体系的动量取值为 A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/156065cb1de5431a9a2ea0b029f26f79.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/627120343f054317828addfe01200e5b.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/09f88938fc6f43a0819284117c0b14fa.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/2311487532fb45c789f7dce939291db1.png" />
- 下列各项中，为某五阶行列式带有正号的项是（ ）. A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/4658d695fae347e4946255df6020dc5d.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/4ac8a6e96f33494aabaec5e4656ad4f0.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/1c2cad6935fd4b16bd50dd3e90f3afd1.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/ebebf79d747d48c98783cd373eb64c8c.png" />
- 电路如图所示。则u01、u0与 uI的运算关系分别为（ ）、（ ）。 <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/418adfb996644706aef30b7d2841ccb9.png" /> A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/ffe4934c2b0748428937c24c7ff16c3b.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/1da45f59ab0845f7be8cdc1f80a78caa.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/ca685a45d5764329b8551eb6eaeb6a58.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/d3f91ade92954e7fbd65a917b04cc13b.png" />
- 已知某网络函数单位冲激响应如图所示，则网络函数表达式可能为（ ） 。<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/1ea32deea3ff4a79adbdf2fd1d50f685.png" /> A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/3daa0643dbc0480582ecdded649049b2.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/38da044f0efb404a840b6cad69f53996.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/97e060f9767b46cbaa03ec6a04f8baed.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/fc42e852a3ca49ff9fcb9d5efe69a1a9.png" />