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【判断题】
( ) 调速系统的动态技术指标是指系统在给定信号和扰动信号作用下系统的动态过程品质。系统对扰动信号的响应能力也称为跟随指标。A.
正确
B.
错误
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举一反三
【单选题】____ the Internet is of great help, I don’t think it’s a good idea to spend too much time on it.
A.
While
B.
As
C.
Because
D.
If
【简答题】–Well, where did you spend your night that day? --At __________. A．where it is called Grand Hotel B．what is called Grand Hotel C．which is called Grand Hotel D．that is called Grand Hotel
【单选题】______ that the way people spend their holidays has changed a great deal in the past ten years.
A.
What is reported
B.
It is reported
C.
It reports
D.
As is reported
【单选题】Occasions are quite rare _____ the father has the time to spend a day with his kids. [ ]
A.
when
B.
which
C.
why
D.
that
【单选题】We shouldn’t spend our money testing so many people, most of _____are healthy
A.
that
B.
which
C.
what
D.
whom
【简答题】在下图所示电路中,试求电流I 和电压U 。
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