技术力学基础 - 2026 进行中

科目: 技术力学基础
级别: IV
类别: 大学生
测试题目: 英语
问题示例: A rigid body is acted upon by several concurrent forces. Which condition is sufficient for translational equilibrium? The algebraic sum of their magnitudes is zero, The largest force must act vertically, The vector sum of all forces must be zero, All forces must have equal magnitudes