问题 单项选择题

关于楼梯防火、防烟、疏散的要求,下列说法中不正确的是()。

A.楼梯间前室和封闭楼梯间的内墙上,除在同层开设通向公共走道的疏散门外,不应开设其他的房间门窗(住宅除外)

B.楼梯间内宜有天然采光,并不应有影响疏散的凸出物

C.疏散用楼梯和疏散通道上的阶梯宜采用螺旋楼梯和扇形踏步

D.在楼梯周围2m内的墙面上,除疏散门外,不应设其他门窗洞口

答案

参考答案:C

解析:

本题涉及的考点是楼梯防火、防烟、疏散的要求。楼梯防火、防烟、疏散的要求包括:

(1)楼梯间前室和封闭楼梯间的内墙上,除在同层开设通向公共走道的疏散门外,不应开设其他的房间门窗(住宅除外)。楼梯间内宜有天然采光,并不应有影响疏散的凸出物。

(2)楼梯间及其前室内不应附设烧水间,可燃材料储藏室,非封闭的电梯井,可燃气体管道,甲、乙、丙类液体管道等。

(3)在住宅内,可燃气体管道如必须局部水平穿过楼梯间时,应采取可靠的保护设施。

(4)室外疏散楼梯和每层出口处平台,均应采取非燃烧材料制作。平台的耐火极限不应低于1h,楼梯段的耐火极限应不低于0.25h。在楼梯周围2m内的墙面上,除疏散门外,不应设其他门窗洞口。

(5)疏散用楼梯和疏散通道上的阶梯不宜采用螺旋楼梯和扇形踏步。

阅读理解

     We need your name, year of birth, home address (city and state), phone number, school name

and e-mail address so that we can e-mail you if your work is published (出版).

     The sentence “I promise (承诺) that the work is original (原创的)” must be written on the

top of your writing, and then you must write down your name.

     Keep sending your works all winter! You can mail your works to Chester Press Box 172, Chester,

Cheshire, visit www. Chesterpress.edu or submit (注册) @Chesterpress. edu.

     Please remember the following points:?

     You should keep a copy for yourself.?

     Your work may be corrected. We keep the right (权利) to correct and publish it in any form

without your permission.? 

     If you don’t want your name and address for our record, we will not return your work that you

send to us.

根据短文内容,选择最佳选项。

1. Which of the following is NOT mentioned in this passage?  

A. Phone number.              

B. School name.

C. School address.                  

D. Year of birth.

2. From the passage, we know that Chester Press is probably a ______.  

A. magazine

B. film

C. game

D. club

3. Which of the following is NOT true according to this passage?  

A. You can send your works in winter.

B. Editors at Chester Press cannot correct your works.  

C. You have to make sure that your works are original.

D. You will be told by e-mail if your work is published.

4. What do we know from this passage? 

A. You can send your works by post.

B. You must type the works yourselves.

C. You aren’t allowed to keep your own copy.  

D. Your works cannot be published without your permission.

5. Who might be interested in this passage?  

A. Nurses.                

B. Book sellers.  

C. TV reporters.              

D. Writers.

单项选择题