【简答题】直径为d的圆截面钢材受轴向拉力作用已知其中纵线应变为ε,弹性模量为E, 则杆的轴力为___________
【单选题】One can't live without money , but __ can live without air.
【单选题】Shanghai is __ the east of Nanjing.
【单选题】The Palace Museum is in ___________. [ ]
【单选题】用来存储当前正在运行的应用程序和相应数据的存储器是
【简答题】Computer is one of the greatest ___________________ (发明). I can’t imagine life without it.
【单选题】直径为 d 的圆截面钢杆受轴向拉力作用,已知其纵向线应变为 e ,弹性模量为 E ,杆的轴力为:
【单选题】He went to Nanjing ___ October, 2008.