【評論主題】2.The solid steel shaft AB is to be used as a torsion bar. Bar BC is a rigid horizontal member. Spec
【評論內容】結構不強容易破損
【評論主題】二、寫出「守門人」(gatekeeper)理論的源流,並舉出 與「守門人」相關的理論。
【評論內容】折衷