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【单选题】
3.23属于( )类A.
B.
C.
D.
D
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】他励直流电动机的 ,是 指运行中的直流电机突然断开电枢电源,然后在电枢回路串入制动电阻,使电枢绕组的惯性能量消耗在电阻上,使电机快速制动。
【单选题】已知2f（x）+f（ 1 x ）=- 3 x （x≠0），则下列说法正确的是（ ）
A.
f（x）为奇函数且在（-∞，0）上为增函数
B.
f（x）为奇函数且在（-∞，0）上为减函数
C.
f（x）为偶函数且在（-∞，0）上为增函数
D.
f（x）为偶函数且在（-∞，0）上为减函数
【单选题】Where is the method section?
A.
After the introduction section
B.
Before the introduction section
C.
Before the discussion
【多选题】Where is the method section?
A.
After the introduction section
B.
Before the introduction section
C.
Before the discussion
【简答题】已知函数 f(x)= p x 2 +2 q-3x 是奇函数，且 f(2)=- 5 3 ，求f（x）的解析式．
【单选题】他励直流电动机的 ( ) ,是 指运行中的直流电机突然断开电枢电源,然后在电枢回路串入制动电阻,使电枢绕组的惯性能量消耗在电阻上,使电机快速制动。
A.
能耗制动
B.
电枢反接制动
C.
倒拉反转反接制动
D.
回馈制动
【单选题】Which of the statements is NOT true about the Method Section?
A.
The authors can use “Methodology” as the title of the Method Section when they provide the rationale for the specific experimental procedures chosen.
B.
The researcher must provide a clear and precise description of how an experiment was carried out.
C.
The Method Section is very important because it provides the information of data collection and data ysis.
D.
Besides the description of the steps that you followed in conducting your study, you still need to describe how the statistics were examined in the Method Section.
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