Access所设计的数据访问页是一个( )。A.独立的外部文件 B.独立的数据库文

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问题:

Access所设计的数据访问页是一个( )。

A.独立的外部文件

B.独立的数据库文件

C.在数据库文件中的文件

D.数据库记录的超链接

考点:计算机等级考试ACCESS二级ACCESS笔试
题型:单项选择题

Could you tell me        the new teaching building will be completed?

A.how long

B.how soon

C.how often

D.how far

题型:单项选择题

放射自显影采用的示踪剂是

A.示踪技术

B.射线能使感光材料感光

C.放射性核素或其化合物

D.探测示踪剂在生物组织中的分布状态

E.利用显像仪器成像

题型:单项选择题

.

       71  It is divided into two types: short term memory and long term memory. Short term memory helps the brain to remember the information from a few seconds to a few minutes, for example, searching a phone number in the phone directory. This type of information is not stored for a long time, and slips from the brain.    72   

      73   There is no exact definition of brain exercises. The key to brain exercises is to stimulate(刺激) the gray cells of our mind. For example, trying out different problem solving exercises can be a good practice for improving the analytical skills of brain.   74  If you regularly exercise it, you will develop a good body, or else you will have an unfit body, and thus, our brain needs exercises regularly. Here are some memory improvement tips for adults:

●Regular exercises help to keep away diseases that are harmful to the memory. Besides, regular exercising improves the feeling of well-being and improves blood circulation to the brain.

●Don't be stressed, as stress holds back the ability of the mind to concentrate. A stress-free mind will collect and store more information that a stressed mind, so avoid being over-stressed. But in modern times people have great pressure from work and life.    75  . Sleep is necessary for keeping the mind and body fit and the side effects of lack of sleep include a lack of concentration.

A.Ask your doctors for advice on memory.

B.Developing good sleeping habits helps a lot.

C.The memory is just like our body in some way.

D.Memory is the remembering of any information taken in by the brain.E.Not all people have the power to recite so many things at a time.

F.Long term memory, on the other hand, is the memory where we make conscious efforts to keep the information for a long time.

G.Brain exercises are one of the simplest ways of improving memory power.

题型:单项选择题

共用天线系统设计,输出口用户电平设计值应符合()dBuV要求(邻频传输系统)。

A.(64±4)

B.(68±4)

C.(70±4)

D.(75±4)

题型:单项选择题

我国学校教学的基本组织形式是()

A.分组教学

B.复式教学

C.班级授课

D.个别教学

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