以下关于项目环境中的沟通的陈述哪一项是正确的（ ）A．项目经理必须承担保证信息得到正确理解的主要责任B．有效率的会议，“作战室”和紧密的矩阵可以提高沟通效率C．如果项目包括12名成员，则存在4/8中可能的沟通渠道D．大多数项目经理花费他们工作时间的30%在沟通上

正确答案：B
65.   b. Effective meetings, a war room, and a tight matrix promote effective communication.
Effective meetings start and end on time, follow an agenda,  and result in action items for
people to complete. A war room provides team identity and a place to conduct project
business. A tight matrix indicates that project team members are located within close
physical proximity, which fosters informal communication and team building.

正确答案：B

正确答案：B