智力竞赛是一种生动活泼的教育方式，通过抢答和必答两种答题方式能引起参赛者和观众的极大兴趣，并且能在极短的时间内，使人们迅速增加一些科学知识和生活常识。-Quiz is a lively form of education, through the Answer and will answer the way A two contestants and viewers can cause a great deal of interest, and in a very short time so

随机感知的机会频谱接入，方法思路较简单-randomly sense channel of opportunistic spectrum access in cognitive radio

实现了播放YUV文件，选择Y U V三个通道进行播放，但单独播放色差通道没有太大的意义-To achieve a play YUV files, select YUV three channels to play, but single player does not make much sense color channel

用API函数实现图像的淡入淡出，对于初学者很有意义，可以看一下-API function to achieve the image fade, it makes sense for beginners, you can look