图示结构的两杆许用应力均为[σ]，杆1的面积为A，杆2的面积为2A，则该结构的许用载荷是：A. [F]=A[σ] B. [F] = 2A[σ] C. ...

作者: tihaiku 人气: - 评论: 0

问题图示结构的两杆许用应力均为[σ]，杆1的面积为A，杆2的面积为2A，则该结构的许用载荷是：

选项 A. [F]=A[σ] B. [F] = 2A[σ] C. [F]=3A[σ] D. [F] = 4A[σ]

答案 B

解析

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