下列物质中,两个氢原子的化学性质不同的是()。 A.乙炔 B.甲酸 C.甲醛 D.乙

题型:单项选择题

问题:

下列物质中,两个氢原子的化学性质不同的是()。

A.乙炔

B.甲酸

C.甲醛

D.乙二酸

考点:注册土木工程师水利水电工程2011土木工程师(水利水电工程师)基础知识考试真题及答案
题型:单项选择题

Hundreds of years ago, news was carried from place to place by people on foot or by horse. It took days, weeks and sometimes months for people to receive news. Now it is possible to send words and pictures around the world in seconds(秒). Billions of people learn about news stories of their own country and all over the world every day, either by watching TV or reading newspapers.

Newspapers have been an important part of everyday life since the 18th century. Many countries have hundreds of different newspapers. How do newspaper editors(编辑) decide which news stories to print (印刷)? Why do they print some stories and not others? What makes a good newspaper story?                                                           

Firstly, it is important to report new stories. TV stations can report news much faster than newspapers. Yet, newspapers give more about the same story. They may also look at the story in another way, or they may print completely (完全地) different stories to those on TV.

Secondly, a news story has to be interesting and unusual. People don’t want to read stories about everyday life As a result, many stories are about some kind of danger and seem to be "bad" news. For example, newspapers never print stories about planes landing safely, instead they print stories about plane accidents.

Another factor(因素) is also very important in many news stories. Many people are interested in news in foreign countries, but more prefer to read stories about people, places and events (事件) in their own country. So the stories on the front page in Chinese newspapers are usually very different from the ones in British, French and American newspapers.

小题1: According (根据) the passage, how do people learn about news stories in the world now?

A.They carry news stories and tell others from place to place oh foot or by horse.

B.They tell each other what they have seen with their eyes.

C.They watch TV or read newspapers.

D.They listen to the radio every day.小题2:  The difference between newspaper stories and TV news reports is that    .

A.people can learn more about the same news story from a newspaper

B.people can read the news story more quickly in a newspaper

C.people can read news stories in other countries

D.people can read news’ stories about their own country小题3: To make a good newspaper story, how many factors does the passage talk about?

A.Two.

B.Three.

C.Five.

D.Six.小题4:According to the passage, which of the following can you most possibly watch on TV?

A.You often play football with your friends after school.

B.Your teacher has got a cold.

C.A tiger in the city zoo has run out and hasn’t been caught.

D.The bike in the front of your house is lost.小题5:Which of the following is Not True of this passage?

A.News stories on the front page of every country are always the same.

B.People like to read interesting and unusual news.

C.Not only TV but also newspapers can help people to learn what is happening around the world.

D.Newspapers have been an important part of everyday life for more than three hundred years.

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仿生学是一门模仿生物的特殊本领,利用生物的结构和功能原理来研制机械或各种新技术的科学。以下属于仿生学成果的是( )。

A.人们用掺和某些化学物质的方法得到类似生物光(如萤火虫)的冷光,作为安全照明用
B.科学研究表明,大猩猩的智力最接近人类,科学家据此猜测,大猩猩是人类始祖演变发展的一个分支
C.阿拉斯加犬被用来拉雪橇,因为它们坚韧耐劳,并且团结协作的精神强
D.一只鹦鹉非常聪明,它会说“欢迎光临”,“谢谢”等语句,成为某酒吧人见人爱的宠物

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患者女性,18岁,因“右侧腰背部疼痛20日”来诊。患者于20日前无诱因出现右侧腰背部疼痛,性质为钝痛,较剧烈,伴尿频、尿急、尿痛及发热,无排尿中断及肉眼血尿。外院给予抗感染、对症治疗后腰背部疼痛缓解。近5日再次出现腰背部疼痛,并伴有肉眼血尿多次,无明显尿痛。查体:体温36.4℃,脉搏80次/分,呼吸20次/分,血压110/70mmHg(1mmHg=0.133kPa);彩色多普勒超声:右肾脓肿可能,尿液分析未见明显异常。尿培养为大肠埃希菌(产超广谱β内酰胺酶)。诊断:右肾周脓肿,泌尿系感染。

ESBL是指细菌对抗菌药产生的一种耐药酶,该酶是()

A.头孢菌素酶

B.超广谱β内酰胺酶

C.碳青霉烯酶

D.青霉素酶

E.氨基糖苷钝化酶

题型:单项选择题

电气着火时应电源切断,然后将火扑灭,灭火时以下严禁使用的是()。

题型:单项选择题

人防工程火灾疏散照明和火灾备用照明可采用蓄电池作备用电源,其连续供电时间不应少于()min。

A.20

B.30

C.60

D.90

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