You finally have been appointed project manager for a major company project．In your work for other project and functional managers as a team member，you have been frustrated because the entire team rarely met after the kickoff meeting．As a result，you felt that you did not know how the project was progressing．On some occasions，you did not receive copies of progress reports submitted to upper management．You believe it is important to share information with the team．One of your first activities as project manager has been to set up an information retrieval system．Your information sharing methods will include all the following except______．

A．manual filing systems

B．project management software

C．project intranet

D．electronic databases

牛头刨床按传动形式可分为机械传动牛头刨床和液压传动牛头刨床。