【多选题】根据人际关系的内容结构,可将人际关系划分为( )。
【单选题】The main feature of joint ventures is
A.
they are not continuing business.
B.
riley are of short duration.
C.
they are usually limited to one specific venture.
D.
they are dissolved upon the implementation of the undertaking.
【判断题】对物体运动起限制作用的周围物体称为约束。()
【简答题】限制物体运动的周围物体称为该物体的______。
【单选题】如果一个物体的运动受到周围物体的( ),则这些周围物体就称为约束。
【简答题】下面程序的运行结果是 【 】 。 main() { unsigned a=0112,x; x=a>>3; printf('x=%o',x); }