您所在的当前位置：初中物理试题 >

物质的物理特征

> 具有链状结构的高分子材料具有热塑性，因而可以反复加工，多次使用．依据物质的性质特点，判断下列物质属于链状结构的是 A.有机玻璃 B.电木 C.大棚薄膜塑料 D.锅把的隔热塑料外壳

问题：

发布时间：2024-09-08

具有链状结构的高分子材料具有热塑性，因而可以反复加工，多次使用．依据物质的性质特点，判断下列物质属于链状结构的是

A.有机玻璃
B.电木
C.大棚薄膜塑料
D.锅把的隔热塑料外壳

参考答案：

提问用户：ON***tF7

可能感兴趣的题目：

1 （本题6分）高空作业的工人体重为G=600N，系一条长为L=5m的弹性绳，若工人不慎跌落时绳的缓冲时间为t=2s，则绳的平均冲力是多大？
2 下列备选答案中，不属于新疆“三山夹两盆”中的“三山”的是 A.天山 B.阿尔泰山 C.昆仑山 D.祁连山
3 在透明溶液中，下列各组离子能大量共存的是（　　） A．HCO3-、Na+、K+、OH- B．Na+、CO32-、NO3-、H+ C．K+、Cu2+、Cl-、SO42- D．OH-、NH4+、Cl-、SO32-
4 ________ Lily and Lucy like fruit? A.Are B.Do C.Does D.Is
5 阅读理解。 Last month, students from one hundred and three universities in eighty-eight countries took part in an international computer programming contest, which took place in Harbin, China. Three-person teams from each school had five hours to solve eleven real world problems. The students first listed the problems in order of difficulty. Then they figured out the requirements of each. They designed ways to test their solutions. And they wrote the needed software systems. Even the winning team from Shanghai Jiaotong University in China was not able to solve all the problems within the given limit. Stanford"s team solved five problems and finished in fourteenth place. Stanford was one of twenty-one American universities that took part in the contest this year. The official name of the Battle of the Brains is the ACM International Collegiate Contest. The first final competition was held in 1977 at the Association for Computer Machinery Computer Science Conference. Today, a network of universities holds area competitions that send the winners to the world finals, now organized by IBM. Contest spokesman Dong Heintzman says the world champions receive prizes and scholarships. They are also guaranteed an offer of employment or internship (实习) with IBM. He said, "We have had past world champions that IBM has gone and employed in our Zurich research laboratory and are now working on some of the leading edge materials in science and physics. We have a world finalist from China who"s been working on the Watson Supercomputer that in the near future will be playing Jeopardy (一种超级计算机名称) against the best Jeopardy players in the world. So this competition is an opportunity to be recognized and to be recruited (招聘) by some of the top technology and research firms around the world." 1. From the first paragraph we can figure out there were____ programmers taking part in the contest. A. 3 B. 88 C. 246 D. a lot of 2. From the last paragraph we know that ____. A. the winners will be offered a job in IBM B. this contest provides a chance for the universities C. this competition is held every four years D. many big companies are short of programmers 3. What is the best title of this passage? A. The Best Top Contest B. The Battle of the Brains C. The Difficult Competition D. Courage and Wisdom Needed
6 关于香港和澳门的叙述正确的是 A.香港位于珠江口西侧，北邻深圳 B.澳门位于珠江口东侧，北邻珠海 C.香港的经济支柱是博彩旅游业 D.香港最大的转口贸易伙伴是祖国内地
7 下列各组中的离子，能在溶液中大量共存的是（　　） A．Mg2+、Ba2+、OH-、NO3- B．Ba2+、Na+、CO32-、OH- C．K+、Mg2+、NO3-、Cl- D．H+、K+、CO32-、SO42-
8 Don’t ______ personal information such as your name， telephone number and address until you feel comfortable. A．give in B．give off C．give out D．give up
9 商业网点布局规划适宜采用的地理信息技术是( ) A．GIS B．GPS C．RS D．RS和GPS
10 我国粮食作物的“南稻北麦”体现了农业生产的 A综合性 B地域性 C 季节性 D 周期性