The flag, the most common symbol of a na

题型:阅读理解

问题:

The flag, the most common symbol of a nation in the modern world, is also one of the most ancient. With a clear symbolic meaning, the flag in the traditional form is still used today to mark buildings, ships and other vehicles related to a country.

The national flag as we know it today is in no way a primitive artifact. It is, rather, the product of thousands of years’ development. Historians believe that it had two major ancestors, of which the earlier served to show wind direction.

Early human beings used very fragile houses and boats. Often strong winds would tear roofs from houses or cause high waves that endangered travelers. People’s food supplies were similarly vulnerable. Even after they had learned how to plant grains, they still needed help from nature to ensure good harvests. Therefore they feared and depended on the power of the wind, which could bring warmth from one direction and cold from another.

Using a simple piece of cloth tied to the top of a post to tell the direction of the wind was more dependable than earlier methods, such as watching the rising of smoke from a fire. The connection of the flag with heavenly power was therefore reasonable. Early human societies began to fix long pieces of cloth to the tops of totems (图腾) before carrying them into battle. They believed that the power of the wind would be added to the good wishes of the gods and ancestors represented by the totems themselves.

These flags developed very slowly into modern flags. The first known flag of a nation or a ruler was unmarked: The king of China around 1,000 B.C. was known to have a white flag carried ahead of him. This practice might have been learned from Egyptians even further in the past, but it was from China that it spread over trade routes through India, then across Arab lands, and finally to Europe, where it met up with the other ancestor of the national flag.

小题1: The underlined word “ vulnerable” in paragraph 3 means _______.

A.easy to damage  

B.likely to be protected

C.impossible to make sure of  

D.difficult to find小题2:The earliest flags were connected with heavenly power because they _______.

A.could tell wind direction  

B.could bring good luck to fighters

C.were believed to stand for natural forces

D.were handed down by the ancestors小题3:What does the author know of the first national flag?

A.He knows when it was sent to Europe.

B.He doubts where it started.

C.He thinks it came from China.  

D.He believes it was made in Egypt.小题4:What will the author most probably talk about next?

A.The role of China in the spread of the national flag.

B.The importance of modern flags.

C.The use of modern flags in Europe.

D.The second ancestor of the national flag.

考点:历史文化类阅读
题型:阅读理解

茶叶中钾约占矿物质总量的()%。

A.25

B.30

C.40

D.50

题型:阅读理解

简化口腔卫生指数要检查()

A.全口牙

B.半口牙

C.前牙唇侧

D.6颗指数牙

E.后牙舌侧

题型:阅读理解

清算财产采用现行市价法时,应考虑的因素是()

A.资产的数量

B.资产的质量

C.现行市场价格

D.供求关系

E.功能状况

题型:阅读理解

单相桥式整流电路中,每个二极管承受的最大反向电压是变压器次级绕组电压有效值的()。

A、1倍

B、0.9倍

C、根号2倍

题型:阅读理解


(一)
其施工单位承建一项南方沿海城市的大型体育馆机电安装工程。合同工期为10个月,于2009年11月1O日开工,2010年9月10日竣工。
该工程特点是各类动力设备包括冷冻机组、水泵、集中空调机组、变配电装置等,均布置在有通风设施和排水设施的地下室。
由于南方沿海空气湿度大、昼夜温差大,夏天地下室结露严重,给焊接、电气调试、油漆、保温等作业的施工质量控制带来困难。
通风与空调系统的风管设计工作压力为1000Pa。项目部决定风管及部件在场外加工。
项目部制订的施工进度计划中,施工高峰期在6~8月,正值高温季节。根据地下室的环境条件和比赛大厅高空作业多的特点,需制订针对性施工技术措施,编制质检计划和重点部位的质量预控方案等,使工程施工顺利进行,确保工程质量。
在施工过程中,由于个别班组抢工期,在管理上出现工序质量失控,致使在试车阶段发生施工质量问题,如通风与空调系统进行单机和联动试车时,有两台风机出现震动大、噪声大,电动机端部发热等异常现象。经调查发现:风机的钢垫铁有移位和松动,电动机与风机的联轴器同轴度超差。
问题

针对环境条件,制订主要的施工技术措施。

更多题库