题目内容

对于位移电流,下列四种说法中正确的是

A. 有电场的地方就有位移电流
B. 有磁场的地方就有位移电流
C. 电场变化的地方就有位移电流
D. 磁场变化的地方就有位移电流

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麦克斯韦关于电磁场理论的两个基本假设是:__________激发涡旋(感生)电场;__________激发涡旋(感生)磁场(位移电流)。

电场越强的地方,位移电流密度就越大。

A. 对
B. 错

In order to successfully manage a project, the project manager must assume the dual roles of manager and leader. As the role of a manager, the following options, except for ( ), are all items that the project manager should focus on.

A. Develop process
B. Unity staff
C. Provide project stakeholders with the desired results
D. Concerned about the organization and its institutions

演示技能的运用可以促进学生观察能力和实验探索能力的发展。( )

A. 对
B. 错

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