This paper presents a study on effects of carburized parts on residual stresses of thin-rimmed spur gears with symmetric web arrangements due to the case-carbur
1. (1) Excuse me. But it’s time to have yourtemperature___________. A. takingB. to be taken C. takeD. taken (2) Why do you have the lights ___________ all night? A. burnB. to burn C. burningD. b