【简答题】单位冲激响应 h (t) 是系统在 δ(t) 激励下产生的零状态响应,为什么又说它与输入无关?
【简答题】Albert Einstein, the greatest scientist in the 20th century, once __________ an offer of $1,000 a minute to speak on the radio. A. turned down B. turned up C. turned out D. turned in
【单选题】Albert Einstein, the greatest scientist in the 20th century, once______an offer of $1,000 a minute to speak on the radio.
【判断题】单位冲激响应 h (t) 是系统在 δ(t) 激励下产生的零状态响应,所以说它与输入有关。 ( )