【简答题】选出句中错误并改正。 ( ) 1. My father doesn't works on Friday . ____________________ A B C D ( ) 2. Your brother don't like beautiful dolls . ____________________ A B C D ( ) 3. She c...
【简答题】已知单位负反馈系统开环传递函数【图片】,则下列计算正确的是()。A. B. C. D.
【多选题】已知单位负反馈系统开环传递函数【图片】,则下列计算正确的是()。
【单选题】My father is a little lazy. He _____ very hard. [ ]
【判断题】已知单位负反馈系统开环传递函数【图片】,则阻尼比ζ=2。