- ________ is it today?
- It is Tuesday.
A:What day
B:What time
C:What colour
如图,平行金属板A、B水平正对放置,分别带等量异种电荷,一带电微粒水平射入板间,在重力和电场力共同作用下运动,轨迹如图中虚线所示,那么( )
计算(x2)3的结果是( )