理论上Y211型封隔器下管柱时如遇封隔器中途坐封可最少上提管柱()m左右,解封后继续

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问题:

理论上Y211型封隔器下管柱时如遇封隔器中途坐封可最少上提管柱()m左右,解封后继续下管柱。

A.0.5

B.1.0

C.2.0

D.0.4

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     Compared with their continental counterparts,   children in the UK start school at a very early age.

Our correspondent is not convinced that it gives them any academic advantage.

     My threeyearold son and I went shopping for his school uniform. As he stood in the changing room,

   swamped by even the smallest trousers,   several people commented that he looked too young to start

school. I couldn't agree more. Scarcely will he have blown out the candles on his fourth birthday cake

when I'll be waving him off at the school gates. The poor little man still puts his pants on back to front and

thinks baby pigs come out of eggs. How is he going to cope with literacy and numeracy hours,   let alone

the horrors of school toilets?

     Yes,   I am an overanxious mother but I surely can't be the only person who feels that British children

start school far too young. A research suggests that channelling children into formal learning structures at

such a young age breeds a sense of failure and disaffection that will dog them throughout their school

career.

      The law states that the statutory school starting age for children in the UK is the term after a child's

fifth birthday,   but it is common practice in England and Wales to admit children to reception class at the

beginning of the year in which they become 5,   which means that most children start school at the age of

4. The latest government figures indicate that around 80 percent of children enter school before their fifth

birthday.

     By comparison,   children in France,   Portugal,   Belgium start school at 6,   while the school starting

age in many Scandinavian countries is 7. This is the starting age in Finland,   where students recently beat

those from 39 other countries to come out tops in maths,   science and reading.

1. When her son is going to enter primary school,   the writer feels very ________.

A. excited  

B. worried  

C. surprised  

D. puzzled

2. In the UK,   it is stated in the law that children should start school at the age of ________.

A. 4  

B. 5  

C. 6  

D. 7

3. Which of the following is probably the best title of the passage?

A. Do our children start school too young?

B. Students starting school too young may cause problems

C. Young students may lead to failure

D. The age of starting school in some countries

4. What worries the writer is that her child ________.

A. can't even look after himself

B. can't dress himself

C. has some childish thoughts

D. has little ability in writing and reading

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破伤风患者,气管切开的指征主要是()。

A.呼吸中枢麻痹

B.肺部感染

C.抽搐频繁而又不易用药控制

D.吞咽困难,防止食物误吸

E.腹直肌强直,呼吸受限

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患者,女,70岁。瘫痪多年生活不能白理,此次因发热、上呼吸道感染入院,护士为其梳头时头发打结难以梳通,头发需要湿润。应选择的溶液是

A.醋酸
B.生理盐水
C.70%乙醇
D.30%乙醇
E.50%乙醇

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下列选项可能是BIM未来发展模式的特点的是()。

A、个性化开发

B、全方位应用

C、单方位应用

D、市场细分

E、BIM与造价多软件协调

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焊碳素钢和低合金刚时,采用()焊。

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