A. 金属表面是理想电边界(Perfect Electrical Conduct,PEC)时,在发射电磁波时有180°的相移 B. 金属表面是理想电边界(Perfect Electrical Conduct,PEC)时,在发射电磁波时有0°的相移 C. 理想磁边界(Perfect Magnetic Conduct, PMC)反射电磁波时,相移为0° D. 理想磁边界(Perfect Magnetic Conduct, PMC)反射电磁波时,相移为180°
A. 对 B. 错