高聚物Z是一种重要的电子薄膜材料,P是一种广泛应用的增塑剂。以下是某研究小组设计

题型:填空题

问题:

高聚物Z是一种重要的电子薄膜材料,P是一种广泛应用的增塑剂。以下是某研究小组设计的他们的合成路线。

已知以下信息:

①l molF在O2中充分燃烧,消耗7.5 rriol O2,生成8 nl01 C02和3 mol H20,l mol F与足量NaHCO3溶液反应生成2 rriol C02。其核磁共振氢谱中有3个吸收峰。

②已知:(R、R,代表烃基或氢原子)。

③A是一种醛,B→C的反应中,B分子在加热条件下脱去一个水分子,生成C;C分子中只有1个碳原子上无氢原子。

④D分子中有8个碳原子,其主链上有6个碳原子,且分子内只含有一个—CH3

请回答以下问题:

(1)X的结构简式是              。F分子中含有的含氧官能团的名称是           

(2)写出反应①的化学方程式           。反应②的化学方程式是             

(3)反应③的化学方程式是            

(4)C的结构简式是           _;P的结构简式是-。

(5)符合下列条件的B的同分异构体共有(填数字)            种。

a.在酸性条件下水解为M和N    b.-定条件下M可以转化为N

考点:有机物的推断
题型:填空题

Look up(查阅) the following words in a dictionary , Which word can we find first ?

A.doctor

B.present

C.banana

D.ball

题型:填空题

什么是可疑交易?

题型:填空题

《赤桥下的暖流》是谁的作品()?

A、黑泽明

B、木下惠介

C、今村昌平

D、小津安二郎

题型:填空题

Specific brain disorders can affect the perception of music in a very specific way. Experiments done on epileptics decades ago showed that stimulating certain areas of the temporal lobe on both sides of the brain awakened "musical memories"—vivid re-creations of melodies that the patients had heard years earlier. Lesions in the temporal lobe can result in so-called musicogenic epilepsy, an extremely rare form of the disorder in which seizures are triggered by the sound of music. Autism offers an even greater puzzle. People with this condition are mentally deficient, yet most are proficient musicians; some are "musical savants" possessed of extraordinary talent.
The opposite is true of the less than 1 percent of the population who suffer from amusia, or tree tone deafness. They literally cannot recognize a melody, let alone tell two of them apart, and they are incapable of repeating a song (although they think they are doing correctly). Even simple, familiar tunes such as Frere Jacques and Happy Birthday are mystifying to musics, but when the lyrics are spoken rather than sung, musics are able to recognize the song immediately.
But for instrumentalists, at least, music can evidently trigger physical changes in the brain’s wiring. By measuring faint magnetic field emitted by the brains of professional musicians, a team led by Christo Pantev of the University of Muenster’s Institute of Experimental Audiology in Germany has shown that intensive practice of an instrument leads to discernible enlargement of parts of the cerebral cortex, the layer of gray matter most closely associated with higher brain function.
As for music’s emotional impact, there is some indication that music can affect levels of various hormones, including cortisol (involved in arousal and stress), testosterone (aggression and arousal) and oxytocin (nurturing behavior) as well as trigger release of the natural opiates known as endorphins. Using PET canners, Zatorre has shown that the parts of the brain involved in processing emotion seem to light up with activity when a subject hears music.
As tantalizing as these nits of research are, they barely begin to address the mysteries of music and the brain, including the deepest question of all: Why do we appreciate music Did our musical ancestors have an evolutionary edge over their tin-eared fellow Or is music, as M. I. T. neuroscientist Steven Pinker asserts, just "auditory cheesecake," with no biological value Given music’s central role in most of our lives, it’s time that scientists found the answers.

The word "amusia" underlined in Paragraph 2 means a disease with which people ______ .

A.are impotent in music

B.can’t hear music

C.are unable to sing Happy Birthday

D.are mentally deficient

题型:填空题

模块结构图是信息系统设计中的一种工具,其中符号

表示( )。

A.调用

B.数据

C.控制信息

D.转接符号

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