Transfer switch position bypass time delay set engine exerciser

Transfer switch position bypass time delay set engine exerciser transfer transfer NO.2 Posi Drive switch 英语语法：switch roles 为什么不是change,transfer,transform roles?In the past,the husband used to be the one to bring home the bacon.Now,however,it is not unusual for men and women to _____ roles.A.change B.switch C.transfer D.transform Transfer是什么意思 transfer是什么意思 BACS transfer transfer of Adhesive Transfer Money transfer It's near the posi office（改为一般疑问句） switch foods heat transfer sticker是什么意思 heat transfer printing是什么意思 thermal transfer是什么意思 heat transfer surface是什么意思