单项选择题
A.两B.三C.四D.五
A.磁路;电路B.电路;磁路C.磁路;磁路D.电路;电路
A.片厚则涡流损耗大,片薄则涡流损耗小B.片厚则涡流损耗大,片薄则涡流损耗大C.片厚则涡流损耗小,片薄则涡流损耗小D.片厚则涡流损耗小,片薄则涡流损耗大