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【多选题】
下列对于系统校正的说法什么是正确的？A.
通过改变系统结构，如在系统中增加附加装置或元件 ( 校正装置 ) ，对已有的系统进行重新设计使之满足性能要求。
B.
寻找合适的校正装置。
C.
设计控制器，让系统实现期望的性能目标。
D.
根据被控对象及其控制要求，选择适当的控制器及控制规律，实现给定性能指标。
E.
用仪表对系统进行标定和校正。
F.
采用高温等物理方式，改变系统的运行状态。
G.
校正不会改变系统的特征方程。
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举一反三
【单选题】Which of the following is NOT mentioned as a function of poetry?
A.
Extending your life.
B.
Saving your life.
C.
Criticizing life.
D.
Heightening life.
【简答题】已知某地大地坐标为(106°12′,38°32′),计算:1.该地在高斯投影3°带的带号及其中央子午线经度;2.该地在高斯投影6°带的带号及中央子午线经度。
【简答题】Being safe in your everyday life needs knowledge. If you remember the following information，your life will be much safer. ● Always notice the environment around you. You shouldn’t walk alone outside l...
【简答题】已知某地大地坐标为(106°12′,38°32′)。计算:1该地在高斯投影3°带的带号及其中央子午线经度2该地在高斯投影6°带的带号及其中央子午线经度.(不用写计算过程)。
【简答题】Shift Happens by Robert Holden Price: $ 6.49 It’s an excellent book that will greatly improve your life. It has insightful (富有洞察力的) wisdom that is easy to app ly in everyday life. It’s written in a ve...
【单选题】According to the author, a mature mind will enable you to ______.
A.
work better in your life
B.
gain knowledge
C.
acquire an education
D.
learn without books and teachers
【简答题】You are too romantic about your future husband; such a man does not exist in real life.(英译汉)
【单选题】A Guide to Job Hunting Developing your career and finding a new job can take over your life if you're not careful. That's why recruitment experts Kelly Services have come up with a great list of short...
A.
Managing time.
B.
Working out priorities.
C.
Consulting the experts.
D.
Asking for the family's requirements.
【单选题】( ) 220. Depuis longtemps, je voulais ____ inscrire à un cours de gymnastique.
A.
nous
B.
s’
C.
t’
D.
m’
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