题目内容
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Which of the following statements is NOT true？A．Wales was invaded by the Romans.B．Wales wa
Which of the following statements is NOT true？
A．Wales was invaded by the Romans.
B．Wales was occupied by the Anglo-Saxons.
C．Wales was conquered by the Normans.
D．Wales was threatened by the English.
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的时域特性与频域特性之间的关系；
，试用频域和时域关系求系统的超调量与调整时间。
对应时域性能指标 ，它们反映了系统动态过程的 。
