单项选择题
A.4000V/m,2V/mB.5000V/m,1.8V/mC.4000V/m ,1.1V/mD.5000V/m ,1.5V/m
A.200µT ,12µTB.100µT ,0.9µTC.100µT ,0.6µTD.200µT,21µT
A.1.83%B.2.46%C.7.23%D.8.92%