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【多选题】
下列关于判别分析叙述正确的是A.
是多元分析中用于判别样本所属类型的一种统计分析方法
B.
利用已知类别的样本建立判别模型，对未知类别的样本进行分类
C.
Fishser线性判别分析（Linear Discriminant analysis, LDA）由R.A.Fisher 于1936年提出
D.
Fishser线性判别分析的基本思想是投影
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举一反三
【单选题】This amplifier circuit is a very common configuration used to amplify the difference in voltage between two input signals; in this case input 1 and 2. What is this amplifier called?
A.
Darlington connection amplifier.
B.
Common emitter amplifier.
C.
Differential amplifier.
D.
Push-pull amplifier.
【单选题】Which of the following statements signals a transition in the lecture?
A.
So when you meet with employees on a one-on-one basis like this, you have an opportunity to show them that their thoughts and ideas matter to you.
B.
So how do you do that? Well, there are a lot of ways.
C.
But a successful performance review should be an exchange of information between a supervisor and an employee.
D.
The previous supervisor lacked effective leadership skills, and as a result, everyone suffered.
【简答题】内分泌系统是体内 和分散存在于某些组织中的内分泌细胞组成的一个体内信息传递系统,它与神经系统密切联系,相互配合,共同调节机体的各种功能活动,维持内环境相对稳定
【单选题】This section is an investigation of microphones, audio signals, and amplifiers, intended to develop your circuitdesign skillsand giving you experience of using the oscilloscope to monitor signals in a...
A.
音频信号
B.
放大器
C.
麦克风
D.
示波器
【简答题】SARS相关样品处理，需要在 [填空(1)] 级实验室完成。A. 三
【简答题】对于疑似SARS者正确的处理方法是（ ）
【多选题】SARS相应处理方式正确的有（）。
A.
不是“SARS”，进入正常医疗程序
B.
不像“SARS”，医学观察
C.
疑似“SARS”，留院观察，单人单间病室
D.
做临床诊断，送定点医院，单人单间病室
【单选题】If the egg is not fertilized, hormone levels will drop around ___________. This signals the next menstrual cycle to begin.
A.
Day 7
B.
Day 12
C.
Day 15
D.
Day 25
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