有一焊接工字形截面轴心受压钢构件由于轴向压力N很小，可根据刚度条件选择构件截面面积A，已知lox=9000mm,loy=5000mm,[λ]=150,Ix=2A2,Iy=0.5A2，则最经济合理的A为()mm2。
A、1800A
暂无解析
题目：Describinggraphs
Manycompaniesprovidebenefitsthathelpemployeescopewiththestressesanddemandsofbalancingworkandnonwork.
-----Tinahadnothingforbreakfast,____________she?
-----_____________.Shehadsomebreadandmilk.
Inordertosetupherresearchprogramme,Shonagot____.
Safetyinspection
