使用中的氧气瓶和乙炔气瓶应垂直固定放置，氧气瓶和乙炔气瓶的距离不得小于()m;气...

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【单选题】

使用中的氧气瓶和乙炔气瓶应垂直固定放置，氧气瓶和乙炔气瓶的距离不得小于()m;气瓶的放置地点不得靠近热源，应距明火()m以外。

4，8

5，10

5，8

4，10

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【单选题】已知2f（x）+f（ 1 x ）=- 3 x （x≠0），则下列说法正确的是（　　）

f（x）为奇函数且在（-∞，0）上为增函数

f（x）为奇函数且在（-∞，0）上为减函数

f（x）为偶函数且在（-∞，0）上为增函数

f（x）为偶函数且在（-∞，0）上为减函数

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【简答题】已知函数 f(x)= p x 2 +2 q-3x 是奇函数，且 f(2)=- 5 3 ．（Ⅰ）求函数f（x）的解析式；（Ⅱ）用定义证明函数f（x）在（0，1）上的单调性．

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【单选题】每个防火分区均有( )个直通室外的疏散出口。 (2.5)

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【单选题】The following contents are the major contents in the research method section, except for:

the procedure of the test or experiment

the analytical method of data

the data analysis

查看完整题目与答案

【单选题】Where is the method section?

After the introduction section

Before the introduction section

Before the discussion

查看完整题目与答案

【多选题】Where is the method section?

After the introduction section

Before the introduction section

Before the discussion

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【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．

查看完整题目与答案

【简答题】已知函数f（x）= p x 2 +2 q-3x 是奇函数，且f（2）=- 5 3 ．（1）求函数f（x）的解析式；（2）求证：f（ 1 x ）=f（x）；（3）判断函数f（x）在（0，1）上的单调性，并加以证明．

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【单选题】主持江浦合流工程的是明朝永乐年间的水利大臣( )。

叶宗行

海瑞

夏元吉

董其昌

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【单选题】Which of the statements is NOT true about the Method Section?

The authors can use “Methodology” as the title of the Method Section when they provide the rationale for the specific experimental procedures chosen.

The researcher must provide a clear and precise description of how an experiment was carried out.

The Method Section is very important because it provides the information of data collection and data analysis.

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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f（x）为奇函数且在（-∞，0）上为增函数

f（x）为奇函数且在（-∞，0）上为减函数

f（x）为偶函数且在（-∞，0）上为增函数

f（x）为偶函数且在（-∞，0）上为减函数

查看完整题目与答案

【简答题】已知函数 f(x)= p x 2 +2 q-3x 是奇函数，且 f(2)=- 5 3 ．（Ⅰ）求函数f（x）的解析式；（Ⅱ）用定义证明函数f（x）在（0，1）上的单调性．

查看完整题目与答案

【单选题】每个防火分区均有( )个直通室外的疏散出口。 (2.5)

查看完整题目与答案

【单选题】The following contents are the major contents in the research method section, except for:

the procedure of the test or experiment

the analytical method of data

the data analysis

查看完整题目与答案

【单选题】Where is the method section?

After the introduction section

Before the introduction section

Before the discussion

查看完整题目与答案

【多选题】Where is the method section?

After the introduction section

Before the introduction section

Before the discussion

查看完整题目与答案

【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．

查看完整题目与答案

【单选题】主持江浦合流工程的是明朝永乐年间的水利大臣( )。

查看完整题目与答案

【单选题】Which of the statements is NOT true about the Method Section?

The authors can use “Methodology” as the title of the Method Section when they provide the rationale for the specific experimental procedures chosen.

The researcher must provide a clear and precise description of how an experiment was carried out.

The Method Section is very important because it provides the information of data collection and data analysis.

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.

查看完整题目与答案

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