Member for
2 ปี 10 เดือนAge: 12
Level: 6
Language: Chinese
(zh)
ไอดี: 1515742
12/10/2021
Country code: MY
Country: Malaysia
Main content: 机械 (2008569)
From worksheet author:
choose the correct answer
选出正确答案
Other contents:
杠杆
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![简单机械-杠杆 简单机械-杠杆](/sites/default/files/styles/worksheet/public/def_files/2021/10/12/110120807372318277/110120807372318277001.jpg?itok=zN4DpwuV)