A、R<sub>1sub>>(R<sub>2sub>+R<sub>3sub>) B、R<sub>1sub><(R<sub>2sub>+R<sub>3sub>) C、无法确定 D、R<sub>1sub>=(R<sub>2sub>+R<sub>3sub>)
A、R<sub>1sub>>(R<sub>2sub>+R<sub>3sub>) B、R<sub>1sub><(R<sub>2sub>+R<sub>3sub>) C、无法确定 D、R<sub>1sub>=(R<sub>2sub>十R<sub>3sub>)
A、R<sub>1sub>=R<sub>2sub>+R<sub>3sub> B、R<sub>1sub> C、R<sub>1sub>>R<sub>2sub>+R<sub>3sub> D、难以判定
A、r<sub>1sub>=r<sub>2sub>=0,L<sub>1sub>=L<sub>2sub>=M=0 B、r<sub>1sub>=r<sub>2sub>=0,L<sub>1sub>=L<sub>2sub>=M=∞ C、r<sub>1sub>=r<sub>2sub>=∞,L<sub>1sub>=L<sub>2sub>=M=0 D、r<sub>1sub>=r<sub>2sub>=∞,L<sub>1sub>=L<sub>2sub>=M=∞
A、主图→梅花图→扇形图; B、主图→扇形图→梅花图; C、梅花图→主图→扇形图; D、扇形图→梅花图→主图
A、R<sub>1sub>>R<sub>2sub>>R<sub>3sub> B、R<sub>1sub><R<sub>2sub><R<sub>3sub> C、R<sub>1sub>>R<sub>3sub>>R<sub>2sub> D、R<sub>2sub>>R<sub>1sub>>R<sub>3sub>