题目内容
(请给出正确答案)
[主观]
An informal communication network on a project and within an organization is called a(n):A
An informal communication network on a project and within an organization is called a(n):
A free upward flow
B free horizontal flow
C unrestricted communication flow
D grapevine
E open network
请帮忙给出正确答案和分析,谢谢!
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