【单选题】Is there any change in the schedual of the group?
【单选题】在利用函数进行计算的时候,判定使用数组公式的方法输入的依据是( )。
【单选题】如图为某桁架的计算简图,各杆件长度及节点力如图所示,其中杆1的内力为()。
【单选题】如图所示桁架,在结点C沿水平方向受P力作用。各杆的抗拉刚度相等。若结点C的铅垂位移以VC表示,BC杆的轴力以NBC表示,则( )。
【单选题】Is there any change in Louisa and Will’s relationship?
A.
Their relationship has become a little better
B.
Their relationship has become worse
【单选题】Why is an empty purse always the same? Because there is never any change in it.
【简答题】图示桁架,各杆EA、l相同, ,单元及结点位移编码如图所示。已求出可动结点位移向量{△}=[26.94 -14.42 21.36 5.58] T ×10 -3 m,单元①、单元②的轴力N 1 =______,N 2 =______。
【单选题】下列符号中能够作为C++标识符的是( )。
【单选题】If there is any change about the time of the meeting, please notify us().