【判断题】信息都是具有时效性的,其价值与时间成正比。()
【简答题】Who is Beethoven? He is one of the greatest ______ in the world.
【单选题】One of the greatest features of a home(74)is the ability to share one Internet connection simultaneously over two or more computers.
【单选题】信息都是具有时效性的,其价值与时间成()
【单选题】信息都是具有时效性的,其价值与时 间成()
【单选题】One of the greatest features of a home ______ is the ability to share one Internet connection simultaneously over two or more computers.
【单选题】如果一个信号的频谱是离散的。则该信号的频率成分是()。
【单选题】如果一个信号的频谱是离散的,则该信号频率成分是()