chemoinformatic的意思是

ETL主要的厂商有()

A IBM B Informatica C 微软 D CA

The following contains the main information of a notice of the Public Relations Department of a joint-venture(合资企业)．You are required to write an English notice of 80-100 words based on the following points．

说明：根据下列信息以公关部的名义给所有员工写一份公告，邀请他们为公司庆祝活动献计献策。

1．历史与现状：成立15年，在规模和效益方面现处于同行业五强之一。

2．庆祝活动：举行一系列活动，庆祝取得的成就。

3．欢迎献计献策：被采用者有奖，所提建议送往本部门办公室。

Words for Reference：

规模scope；经济效益economic benefits；同行业the same industry；同仁colleague；献计献策make proposals。

In the fields of physical security and information security,access control is the selective restriction of access to a place or other resource.The act of accessing may mean consuming,entering,or using.Permission to access a resource is called authorization（授权）．

An access control mechanism（71）between a user(or a process executing on behalf of a user)and system resources,such as applications,operating systems,firewalls,routers,files,and databases.The system must first authenticate（验证）a user seeking access.Typically the authentication function determines whether the user is（72）to access the system at all.Then the access control function determines if the specific requested access by this user is permitted.A security administrator maintains an authorization database that specifies what type of access to which resources is allowed for this user.The access control function consults this database to determine whether to（73）access.An auditing function monitors and keeps a record of user accesses to system resources.

In practice,a number of（74）may cooperatively share the access control function.All operating systems have at least a rudimentary（基本的）,and in many cases a quite robust,access control component.Add-on security packages can add to the（75）access control capabilities of the OS.Particular applications or utilities,such as a database management system,also incorporate access control functions.External devices,such as firewalls,can also provide access control services.

A.cooperates

B.coordinates

C.connects

D.mediates

According to the text, American newspapers ______.

A．have a limited range of information

B．attract readers of all political groups

C．are compared with television all the time

D．mainly concern state news

Now with TV people ______.

A．discuss politics at an information center

B．show more interest in politics

C．make their own decisions on political affairs

D．express their opinions freely

Attention Employees:

This notice is to inform. you of a change to payment procedures under the Employee Scholarship Benefit Program, effective August 1.

Due to new tax laws, all scholarships paid must be paid directly to the recipient with tax withheld on the payment. While the application procedure will remain the same, the payment will now be made from Human Resources and will accompany your regular paycheck. Please note that the scholarship will not be automatically applied to the tuition bill, recipients must physically do so.

For more information about this matter, please contact the Human Resources Department at 837-2389. Thank you for your understanding and cooperation.

What caused the change?

A．New tax laws

B．A new federal law

C．A company policy change

D．University policy changes

You are going to read a magazine article about a man who teaches children how to improve their memory Choose the most suitable heading from the list A-I for each part (1-7) of the article. There is one extra heading which you do not need to use. There is an example at the beginning (0).

A An obvious need

B Gaining attention

C The odder the better

D Making sense of information

E Trade secrets

F Academic approval

G A change of focus

H Selected memories

I An ancient skill

Memory test

Jerome Burne talks to a magician who teaches children ways to remember facts.

The Greek philosophers knew about it and it could still dramatically improve children's school results today, except that no one teaches it. "It' is a very old technique for making your memory better. Try memorising this series of random numbers: 3, 6, 5, 5, 2, 1,2, 4. About as meaningful as dates in history or equations in maths, aren't they? Chances are you won't remember them in five minutes, let alone in five hours. However, had you been at a lecture given at a school in the south of England last month, you would now be able to fix them in your head for five days, five weeks, in fact for ever."

【B1】 ______

'I am going to give you five techniques that will enable you to remember anything you need to know at school," promised lecturer lan Robinson to a fascinated audience of a hundred schoolchildren. He slapped his hand down on the table. In his other life, Robinson is an entertainer, and he was using all the tricks he had picked up in his career. "When I've finished in two hours' time, your work will be far more effective and productive. Anyone not interested, leave now." The entire room sat still, glued to their seats.

【B2】 ______

When he entertains, Robinson calls himself the Mind Magician. He specialises in doing magic tricks that look totally impossible, and then he reveals that they involve nothing more mysterious than good old-fashioned trickery. '1 have always been interested in tricks involving memory being able to reel off the order of cards in a pack, that sort of thing," he explains.

【B3】 ______

Robinson was already lecturing to schools on his magic techniques when it struck him that students might find memory techniques even more valuable. "It wasn't a difficult area to move into, as the stutf's all there in books." So he summarised everything to make a two-hour lecture about five techniques.

【B4】 ______

What Robinson's schoolchildren get are methods that will be familiar to anyone who has dipped into any one of a dozen books on memory. The difference is that Robinson's approach is firmly aimed at schoolchildren. The basic idea is to take material that is random and meaningless—musical scales, the bones of the arm—and give them a structure. That series of numbers at the beginning of the article fits in here. Once you think of it as the number of days in the year—365—and the number of weeks—52—and so on, it suddenly becomes permanently memorable.

【B5】 ______

"You want to learn a list of a hundred things? A thousand? No problem," says Robinson. The scandal is that every child is not taught the techniques from the beginning of their school life. The schoolchildren who were watching him thought it was brilliant. "1 wish I'd been told this earlier," commented Mark, after Robinson had shown them how to construct "mental journeys."

【B6】 ______

Essentially, you visualise a walk down a street, or a trip round a room, and pick the points where you will put the things you want to remember—the lamppost, the fruit bowl. Then in each location you put a visual representation of your list—phrasal verbs, historical dates, whatever—making them as strange

Now with TV people can______.

A．discuss politics at an information center

B．show more interest in politics

C．make their own decisions on political affairs

D．express their opinions freely

Now with TV people can__________.

A. discus politics at an information center

B. show more interest in politics

C. make theft own decisions on political affairs

D. express their opinions freely

A. Tracking the most recent read time for a table segment in a user tablespace

B. Tracking the most recent write time for a table segment in a user tablespace

C. Tracking insert time by row for table rows

D. Tracking the most recent write time for a table block

E. Tracking the most recent read time for a table segment in the SYSAUX tablespace

F. Tracking the most recent write time for a table segment in the SYSAUX tablespace