【判断题】信息化电子政务与传统政务相比最根本的区别是信息获取、处理、利用与传输的方式不同。()
【判断题】直接与公众沟通时是实施电子政务的目的之一,也是与传统政务的重要区别。()
【简答题】已知复数z满足(3-4i)z=5i,则|z|=( )。
【简答题】(1) z 1 = 2 + 3i , z 2 =- 1 + 2i. 求 z 1 + z 2 , z 1 - z 2 ; (3) 计算: (1 - 2i) + ( - 2 + 3i) + (3 - 4i) + ( - 4 + 5i) + ... + ( - 2 008 + 2 009i) + (2 009 - 2 010i) .
【多选题】Which of the following are correct to “Beowulf”? _________
A.
It is on the theme of “arms and the man”.
B.
It has the part-historical, part-legendary origin.
C.
There are tribal and feudal elements in the story.
D.
The setting of story of “Beowulf” lies in England.
【简答题】若z=4+3i,则z/丨z丨= (A)1 (B)-1 (C)4/5+3/5i (D)4/5-3/5i
【单选题】计算 (2 + 3i)(1 − i)(3 − 2i) =