单项选择题 系统论的创始人是（）。

单项选择题 A user reports that their system is starting to run slower, especially when opening large local files. The system has sufficient RAM for the users applications, but the hard drive seems to have higher than normal activity when opening large files. Which of the following would be the BEST tool to diagnose and troubleshoot this problem? （）

判断题 美国的《从政道德法》规定：总统、副总统、国会议员等约15000人，必须任前报告本人财产情况，并于每年定期公开