生活饮用水水质微生物检测样品的保存方法为() A.室温 B.8℃ C.4℃ D.37

题型:单项选择题 A1/A2型题

问题:

生活饮用水水质微生物检测样品的保存方法为()

A.室温

B.8℃

C.4℃

D.37℃

E.24℃

考点:微生物检验技术(主管技师)微生物检验专业实践能力微生物检验技术专业实践能力模拟试题五
题型:单项选择题 A1/A2型题

下列关于数据库管理系统DBMS功能的叙述中,哪一个是不正确的

A.完整性定义主要包括对主码、外码以及其他完整性约束的定义

B.系统的安全性控制是由数据库运行管理模块支持的

C.为了提高存储空间利用率和存取效率,DBMS需要提供多种存取方法

D.宿主型数据操纵语言DML可以独立由终端用户使用

题型:单项选择题 A1/A2型题

阅读理解

     Inventor, physicist, surveyor, astronomer, biologist, artist... Robert Hooke was all these and more.

Some say he was the greatest experimental scientist of the seventeenth century.Once he worked with

renowned(有名声的) men of science like Christian Huygens, Antony van Leeuwenhoek, Robert Boyle,

Isaac Newton and the great architect, Christopher Wren.

     Hooke's early education began at home, under the guidance of his father.He entered Westminster

School at the age of thirteen, and from there he went to Oxford, where he came in contact with some

of the best scientists in England.Hooke impressed them with his skill at designing experiments and

devising(发明) instruments.In 1662, at the age of twenty-eight, he was named Curator of Experiments

of the newly formed Royal Society of London.Hooke accepted the job, even though he knew that it had

no money to pay him!

     Watching living things through the microscope was one of his favorite occupations.He devised a

compound microscope for this purpose.One day while observing a cork (软木) under a microscope, he

saw honeycomb-like structures.They were cells-the smallest units of life.In fact, it was Hooke who

coined the term "cell" as the boxlike cells of the cork reminded him of the cells of a monastery(修道院).

     Perhaps because of his varied interests, Hooke often left experiments unfinished.Others took up

where he left off and then claimed sole(独占的)credit.This sometimes led to quarrels with colleagues.

One work that he finished was his book MICROGRAPHIA, a volume that reveals the immense potential of the microscope.The book also includes, among other things, ideas on gravity and light which may have

helped scientists like Newton while they were developing their own theories on these phenomena.

     Hooke made valuable contributions to astronomy too.A crater(陨石坑) on the moon is named after

him in appreciation of his services to this branch of science.

1. From the first paragraph, we can know that Robert Hooke __________.

A. was famous because he worked with many scientists

B. liked making friends with the famous people

C. received a lot from other scientists

D. made contributions to many different fields

2. Robert Hooke probably went to school in __________.

A. 1647      

B. 1634          

C. 1662      

D. 1640

3. Robert Hooke made himself known to some of the best scientists in England by __________.

A. learning by himself with his father's help

B. introducing himself to them

C. designing experiments and instruments

D. refusing any reward from Royal Society of London

4. Robert Hooke couldn't get along well with his colleagues because __________.

A. he couldn't finish his work on time sometimes

B. he had all kinds of interests in his daily life

C. he was too proud to look up to them

D. the other scientists took the fruits of his experiments

题型:单项选择题 A1/A2型题

VC-12中J2字节出现的次数为每秒()次。

A、8000

B、6000

C、4000

D、2000

题型:单项选择题 A1/A2型题

比较优势论是谁提出的______

A.亚当·斯密
B.李嘉图
C.李斯特
D.凯恩斯

题型:单项选择题 A1/A2型题

在可持续发展战略形成过程中,发挥了重要作用的文献是()

A.《沙乡年鉴》

B.《寂静的春天》

C.《自然的权利》

D.《增长的极限》

更多题库