单项选择题
两根材料、长度、支承条件、横截面积都相同的细长压杆，一根为正方形，另一根为圆形，则它们的临界压力值的大小
A、两根杆的临界压力相等
B、圆形杆的临界压力大
C、正方形杆的临界压力大
D、不能比较
两根材料、长度、支承条件、横截面积都相同的细长压杆，一根为正方形，另一根为圆形，则它们的临界压力值的大小
A、两根杆的临界压力相等
B、圆形杆的临界压力大
C、正方形杆的临界压力大
D、不能比较
你可能感兴趣的试题
单项选择题
If you tend to regularly suffer from a certain symptom like headache, be sure to keep in store the _______ medicine to take care of the issue as soon as it starts.
If you tend to regularly suffer from a certain symptom like headache, be sure to keep in store the _______ medicine to take care of the issue as soon as it starts.
A．efficient
B．concise
C．appropriate
D．secure