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【简答题】
已知控制系统的开环传递函数为 ,校正后的Bode图如下 试求: (1) 校正后的传递函数; (2) 校正装置的传递函数,并判断其属于何种校正装置。
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举一反三
【单选题】According to the passage, what might be a barrier to marriage in 2050 ?
A.
Age and education.
B.
Influence from the outside world.
C.
Practice of non-marriage.
D.
Financial independence.
【简答题】市场营销理念：是以消费者需求为中心的企业经营指导思想，重点考虑消费者需要什么，把发现和满足消费者需求作为企业经营活动的核心。()
【单选题】According to paragraph 1, all the following are generally assumed to be true EXCEPT:
A.
It is important for animals' daily activities to be coordinated with recurring events in their environment.
B.
Eukaryotes have internal clocks.
C.
The relationship between biological function and environmental cycles is a topic of intense research.
D.
Animals' daily rhythms are more dependent on external cues than on internal clocks.
【单选题】According to the speaker, why are the humanities important?
A.
They provide us with facts, truth and objectivity.
B.
They provide us with social workers, teachers and artists.
C.
They provide us with many things that we never thought of before.
D.
They provide us with the ability to help others in our local community.
【单选题】关于双抗体夹心法ELISA,不正确的表述是
A.
使用分别针对抗原不同决定基的两种单克隆抗体作酶标记
B.
一种单克隆抗体作为固相抗体，另一种作为酶标抗体
C.
可使标本和酶标抗体同时加入
D.
采用高亲和力的单克隆抗体可提高测定的敏感性和特异性
E.
用于检测二价或二价以上的抗原
【多选题】关于双抗体夹心法 ELISA,正确的表述是
A.
使用分别针对抗原不同决定基的两种单克隆抗体作酶标记
B.
一种单克隆抗体作为固相抗体,另一种作为酶标抗体
C.
可使标本和酶标抗体同时加入
D.
采用高亲和力的单克隆抗体可提高测定的敏感性和特异性
E.
用于检测二价或二价以上的抗原
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