問題詳情

申論題
一、Before 1873, bicycles did not have chains and the pedals were attached directly to the frontwheel. The first bicycle with a chain was invented by H. J. Lawson. His bicycle was driven by achain connected to the back wheel. This chain-driven bicycle was called the “safety bicycle” atthat time.Please draft the abstract of the “safety bicycle” patent application in English.(20 分)

參考答案

答案:A
難度:簡單0.897541
統計:A(219),B(6),C(2),D(1),E(0)

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