【单选题】教育心理学作为一门独立学科诞生于 _______。
【简答题】match each sentence with the corresponding picture.
【简答题】教育心理学作为一门独立的学科诞生于( )年。
【简答题】心理学作为一门独立的科学诞生于( )年。
【判断题】When cutting brittle metal, cutting heat mainly comes from deformation heat in shearing region.
【单选题】The cutting tool removes metal ______it travels past the revolving workpieces.
【简答题】Match each statement with the cortesponding picture.
【单选题】The cutting tool removes metal ______it passes through the rotating workpiece.