問題詳情

1.The upper blade and lower handle of the compoxmd-lever ；v shears are pin-connected to the main element ABE at A and B, respectively, and to the short link CD at C and D?、 respectively. Determine the： forces exerted on a twig when two 150N forces are applied to the handles..

參考答案

答案：B
難度：適中0.428571
統計：A(18),B(30),C(5),D(4),E(0)

用户評論

【Yingju Chen】評論

A選項, 寶特瓶具有韌性佳、質量輕、不透氣、耐酸鹼等特點C選項,保麗龍是PSD選項,若是要裝高溫食物,PP會更安全(美耐皿遇酸熱,會溶出三聚氰胺)

【Mina Lin】評論

謝謝