【单选题】若某元件两端的电压u=5 sin(314-30°)V,电流 i= sin(314t-30°)A,则该元件是( )。
【判断题】企业所选择的目标市场应该是企业力所能及的
【单选题】录像机在记录状态(录像)的时候,进入亮度处理通道的视频信号,先经过滤波器将色度信号滤除,然后将亮度信号进行()处理。
【单选题】Instead of sailing east, Columbus believed he could sail to the Indies.
【简答题】Instead of sailing east, Columbus
believed he could sail to the Indies.A. north B. south C. west
【单选题】Tony has many hobbies,_________dancing, singing, sailing and jogging. A. Instead of B. for example C.because of D. such as
【单选题】纳税人新购置车辆使用的,其车船税的纳税义务发生时间为( )。
【单选题】若某元件两端的电压u=5√2 sin(314t-45。)V,电流i=√2 sin(314t-45。)A,则该元件是( )。