The point Z（0,0,-6) whose distances from A（3,5,2) and B（4,1,3) are equal.

2. The effective communication between two participants partly relies on their common understanding of the non-verbal signs.

The information collected from sources like _______, _________, ________ and other market players can be called marketing information.

The point of intersection between the characteristic curve of the diode and the resistors loadline is known as the _____.

以下属于Gr接口参数的为（）。

Now your are given a network G as below. (1) Describe the application significance of finding the minimal spanning tree of a connected network. (2)Please draw the minimal spanning tree of G using Prim’s algorithm and give the solving process in detail.

You can direct or control responses in a meeting through seating arrangements. Putting chairs in a circle encourages （ ）contributions. A horseshoe or "T" will recognize and emphasize people at the head of the table.

For vector a={3, 3, 3}, the coordinates of its end point A is {-3, -2, -1}, then the coordinates of its starting point B is {1, 2, 3}.

Let |a|=2, |b|=3, then |a+b|=5

Let |a|=2, |b|=3, <a, b>=2[图]/3 , then a[图...