水工建筑物检查、维护及修理的工程项目有哪些内容？

环境温度低于24℃、湿度低于70%时，使用纺织品材料包装的无菌物品的有效期宜为（）

A.1天

B.7天

C.14天

D.21天

E.1月

单句改错（每个句子只有一处错误，每处错误只能改动一个词。）

1. Before the earthquake farmers noticed there were deep cracks on some of the well walls.

    ____________

2. Mice ran out of the fields looked for some places to hide.

    ____________

3. People could hear the sound of planes outside city of Tangshan even when there were no planes in the sky. 

    ____________

4. Two-third of the people in Tangshan died or were injured during the earthquake. 

    ____________

5. 75% of its factories, buildings and 90% of its homes was gone. 

    ____________

6. A number of people who were killed or injured reached more than 400,000. 

    ____________

7. Workers built shelters for survivors their homes had been destroyed. 

    ____________

8. Fresh water was taken to the city by the train, truck and plane. 

    ____________

9. In fifteen terrible minutes the big city laid in ruins. 

    ____________

10. The frightening boy whose mother was lost in the earthquake is looking for her now. 

    ____________

You often hear people refer to Africa as a country, not a continent. It is often a region that is described as being unified around poverty, disease and despair. Africa is far from being a homogenized continent. It has more than 50 countries, each with unique culture, landscape and tradition.

Africa’s diversity is apparent to anyone who travels to the continent. In the north, you have countries like Morocco, Algeria and Egypt, which have a long tradition of welcoming visitors. Further south there is Kenya and Tanzania, both renowned for their wildlife and for Africa’s tallest peak, Mt. Kilimanjaro. On the southern tip of the continent is South Africa, the region’s economic and political superpower which in itself lies many fascinating cultures. There are also the trouble spots like Congo and Sudan which are almost all but avoided by travelers.

Travel in Africa can be rough. It can also be a great joy. If you have patience, a willingness to maintain an open mind, a desire to explore and the ability to laugh at the strange, your African travels will change your life.

There are many entry points to Africa. Your best bet in terms of cheap airfare is to fly into one of the bigger cities like Johannesburg or Nairobi. Depending on where you are starting from flights to Africa can be either quite cheap or outrageously expensive. As is true nearly everywhere, flying into the biggest cities is usually your best bet for a cheap ticket.

Many people who travel to Africa prefer to do so in a group or through an organized adventure trip. This is especially the case with safari trips. BootsnAll has some of the best African adventure trips and safaris in the world. We work closely with local tour providers to offer you many options at very affordable rates.

If you are looking for a place to stay in, check out the hotels in Africa or the hostels in Africa for those on a tighter budget.

Still want more? You can learn from those who have been to Africa by sharingideas and thoughts on our Africa community message board.

1.From the first paragraph, we know when mentioning Africa, people often_______.

A．regard it as a continent, nota country    

B．connect it with poverty, disease and despair

C．consider it a nice place to travel in

D．admit there are more than 50 countries.

2.Africa’s tallest peak, Mt. Kilimanjaro is________.

A．in the north      B．in the south      C．in the middle    D．off the sea shore

3.What can we infer from the underlined part in Para.2?

A．Travelers seldom go to visit Congo or Sudan.

B．People in Congo and Sudan are trouble-makers.

C．Congo and Sudan are as powerful as South Africa.

D．There are few sightseeing spots in Congo or Sudan.

4.Your African travels will be a great joy, if you have_________.

①patience     ②a willingness to maintain an open mind

③a desire to explore     ④the ability to laugh at the strange

A．①②③     B．①③④     C．②③④     D．①②③④

5.What’s the author’s purpose in writing this passage?

A．Introducing some information of Africa.      

B．Encouraging people to travel in Africa.

C．Reminding travelers of the danger in Africa.

D．Telling people the cheap air fare to Africa.

工程项目质量控制系统与工程项目管理组织相融，是（）。

A．间断性的

B．一次性的

C．永久性的

D．长期性的

急性前壁心肌梗死患者，溶栓治疗未开通，患者烦躁、冷汗、尿少，血压90／70mmHg

以下处置不得当或者有风险的是（）

A.多巴胺维持血压

B.主动脉内气囊反搏术

C.静脉注射吗啡5mg镇痛

D.适当补充血容量

E.改善心脏功能