单独获得CPU使用率，用于只想获得CPU使用率的值的朋友。此程序用vs2010编写，单独写了CPU使用率的类，编译通过，文件夹附编译后的文件。-Individual access to CPU usage, CPU usage for just want to get the value of a friend. This program written using vs2010, wrote a separate class CPU utilization, compile, document