【简答题】黑白电视每秒发送30幅图像,每幅图像又分为 525 条水平扫描线,每条水平线又在 650 个点上采样。采样频率 = 。
【判断题】1 Sally is 17 years old and Andy is 25 years old.
【简答题】We kids have different ways to get in touch(接触) with each other now. And for the old, they’d like to go to the market or each other’s houses, but for the young, we kids needn’t follow the of doing so....
【判断题】听录音判断正误 1. Sally is 17 years old and Andy is 25years old.