男生工艺技术 - 2026 进行中

科目: 男生工艺技术
级别: II
类别: 大学生
测试题目: 英语
问题示例: In a simple lifting mechanism, what is the main function of a fixed pulley? To increase the mass of the load, To store electrical energy, To change the direction of the applied force, To sharpen the rope