【判断题】从操作系统管理的角度,逻辑记录是文件内独立的最小信息单位,所以在使用时,不能将它再进一步分割。
【单选题】Today's compartments on the train are ___________ and well-equipped, so the travels have become comfortable and safe.
【判断题】当输入信号为零时,则输出功率也为零,电源供给电路的功率最小,这时单管功率放大器的效率最高。
【简答题】The railway system that has a single rail, or the train that travels along it is technically called _______rail.
【简答题】The high speed train travels at an___ speed of 350 kilometers per hour.
【判断题】当甲类功率放大电路输入信号为零时,则输出功率为零,电源消耗功率也为零。
【判断题】当输入信号为零时,则输出功率也为零,电源供给电路的功率最小,这时单管功率放大器的效率最高。( )
【简答题】The high-speed train travels at an __ speed of 350 kilometres per hour.
【判断题】当输入信号为零时,则输出功率也为零,电源供给电路的功率最小,这时单管功率放大器的功率最高。()
【简答题】The railway system that has a single rail, or the train that travels along it is technically called ______rail.