【判断题】【消耗次数：1】
根据连续性假设，杆件截面上的内力是连续分布的，分布内力系的合力必定是一个力。
①
正确
②
错误
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相关题目
【单选题】
下列结论中哪些是正确的是（）。(1)截面法是分析杆件内力的方法。(2)截面法是分析杆件应力的方法。(3)截面法是分析杆件截面上内力与应力关系的基本方法。
①
全错
②
（2）
③
（1）
④
（3）
【填空题】
受力杆件(物体)某一截面的M点附近微面积ΔA上分布内力的平均集度即[填空1]。
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