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【简答题】
(20分)早在2004年，国家食品监督局就发出“警惕食品中丙烯酰胺（CH 2 =CHCONH 2 ）”的公告，丙烯酰胺会在长期炸制食物过程中产生，具有中等毒性，它对人体可造成神经毒性和遗传毒性。已知：有机物H是丙烯酰胺的相邻同系物；A为气态烃，标准状况下密度为2.5g / L，其分子中有2个甲基；F为六元环状化合物。回答下列问题： （1）写出G的结构__________________  K的结构_____________________ （2）指明下列反应类型：A→B：___________________E→G：___________________ （3）写出下列化学方程式： C→D______________________________________________________________ E→F_______________________________________________________________ （4）下列关于丙烯酰胺的说法，不正确的是________（填选项序号） ①丙烯酰胺所有碳、氮原子不可能在一个平面内    ②人们应改善膳食习惯，少食油炸食品 ③丙烯酰胺可发生加成和水解反应　             ④酰胺类物质其实就是蛋白质 （5）写出有机物H所有同种类别的同分异构体的结构： __________________________________________________________________________
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参考答案：
举一反三
【简答题】The st statistical measure of the sample is the _________________, which gives us an estimate of the expected value of an observation, but it gives no idea of the dispersion or variability of th...
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【简答题】compute the derivative of the given function and find the slope of the line that is tangent to its graph for the specified value of the independent variable.docx
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【单选题】At 2:45 of the video, the Instructor creates a filter for all of the counties in California with a population greater than 1,000,000. However, included in the results is the entire state of California...
A.
Add a filter to detect and remove results which do not include the word "County" in column G.
B.
Add a filter which finds all counties with population greater than 100,000 AND less than 10,000,000 for column H (CENSUS2010POP).
C.
Add a filter where the value in column E is greater than 1,000,000
D.
None of the above
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【多选题】How to compute information gain for continuous value attribute when using ID3?
A.
Sort the value A in increasing order
B.
Consider the midpoint between each pair of adjacent values as a possible split point
C.
Select the minimum expected information requirement as the split-point
D.
Spilt
查看完整题目与答案
【判断题】CⅡ蛋白的稳定性是影响溶源和裂解循环之间开关的一个关键。 ( )
A.
正确
B.
错误
查看完整题目与答案
【简答题】Compute the derivative of the given function and find the equation of the line that is tangent to its graph for the specified value x.docx
查看完整题目与答案
【单选题】超声纵波从声速较小的介质1倾斜入射到声速较大的介质2中，当入射角小于第一临界角时，在介质2中存在：
A.
纵波
B.
横波
C.
表面波
D.
纵波和横波
查看完整题目与答案
【单选题】The interest rate used to compute the present value of a future cash flow is called the:
A.
prime rate.
B.
current rate.
C.
discount rate.
D.
compound rate.
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【单选题】3, Refer to the above data. The equipment has an original estimated useful life of six years. Compute the book value of the equipment at January 31 after the proper January adjustment is recorded:
A.
$1000
B.
$71000
C.
$53000
D.
$60000
查看完整题目与答案
【判断题】C Ⅱ蛋白的稳定性是影响溶源和裂解循环之间开关的一个关键。
A.
正确
B.
错误
查看完整题目与答案
相关题目：
【简答题】The st statistical measure of the sample is the _________________, which gives us an estimate of the expected value of an observation, but it gives no idea of the dispersion or variability of th...
查看完整题目与答案
【简答题】compute the derivative of the given function and find the slope of the line that is tangent to its graph for the specified value of the independent variable.docx
查看完整题目与答案
【单选题】At 2:45 of the video, the Instructor creates a filter for all of the counties in California with a population greater than 1,000,000. However, included in the results is the entire state of California...
A.
Add a filter to detect and remove results which do not include the word "County" in column G.
B.
Add a filter which finds all counties with population greater than 100,000 AND less than 10,000,000 for column H (CENSUS2010POP).
C.
Add a filter where the value in column E is greater than 1,000,000
D.
None of the above
查看完整题目与答案
【多选题】How to compute information gain for continuous value attribute when using ID3?
A.
Sort the value A in increasing order
B.
Consider the midpoint between each pair of adjacent values as a possible split point
C.
Select the minimum expected information requirement as the split-point
D.
Spilt
查看完整题目与答案
【判断题】CⅡ蛋白的稳定性是影响溶源和裂解循环之间开关的一个关键。 ( )
A.
正确
B.
错误
查看完整题目与答案
【简答题】Compute the derivative of the given function and find the equation of the line that is tangent to its graph for the specified value x.docx
查看完整题目与答案
【单选题】超声纵波从声速较小的介质1倾斜入射到声速较大的介质2中，当入射角小于第一临界角时，在介质2中存在：
A.
纵波
B.
横波
C.
表面波
D.
纵波和横波
查看完整题目与答案
【单选题】The interest rate used to compute the present value of a future cash flow is called the:
A.
prime rate.
B.
current rate.
C.
discount rate.
D.
compound rate.
查看完整题目与答案
【单选题】3, Refer to the above data. The equipment has an original estimated useful life of six years. Compute the book value of the equipment at January 31 after the proper January adjustment is recorded:
A.
$1000
B.
$71000
C.
$53000
D.
$60000
查看完整题目与答案
【判断题】C Ⅱ蛋白的稳定性是影响溶源和裂解循环之间开关的一个关键。
A.
正确
B.
错误
查看完整题目与答案
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