在下列几种常用的视频信号中,最基本的视频信号是()
A. RGB
B. YUV
C. Y/C
D. 复合视频信号
GM cannot be used as an indicator of stability at all angles of inclination because().
A. M is not fixed at large angles
B. there is no M at large angles
C. G is not fixed at large angles
D. there is no G at large angle
样本推断总体分()和()两大内容。常用的检验方法有()、()和()。
五强溪汛限水位动态控制方案中,5月份汛限水位控制在()m,6.7月份()m。