【单选题】mso-bidi-font-family:"Times New Roman";mso-font-kerning:1.0pt;mso-ansi-language: EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">麦克斯韦关于电磁场理论的基本假设是( 宋体;mso-font-kerning:1.0pt;mso-ansi-languag...
A.
mso-bidi-font-family:"Times New Roman";mso-font-kerning:1.0pt;mso-ansi-language: EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">相对于观察者静止的电荷产生电场
B.
mso-bidi-font-family:"Times New Roman";mso-font-kerning:1.0pt;mso-ansi-language: EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">恒定电流产生磁场,变化的磁场产生涡旋电场
C.
mso-bidi-font-family:"Times New Roman";mso-font-kerning:1.0pt;mso-ansi-language: EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">变化的磁场产生涡旋电场,变化的电场产生变化磁场
D.
mso-bidi-font-family:"Times New Roman";mso-font-kerning:1.0pt;mso-ansi-language: EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">相对于观察者静止的电荷产生电场,恒定电流产生稳恒定磁场