问题 单项选择题

条件同第91题,若每户设置饮用净水水嘴2个,则整个建筑饮用净水水嘴的最小使用概率为( )。

A.0.010
B.0.015
C.0.032
D.0.030

答案

参考答案:C

解析:根据《建筑给水排水设计规范》(GB 50015—2003)(2009年版)附录F,第91题计算结果,使用概率为:
P=αQh/(1800nq0)=0.22×3696/1800×352×0.04=0.032

完形填空

I like my bike. It brings me a lot of fun. When I was an  1  boy, my father bought it for me. It is my “horse”. I often go to school  2   my bike. I like riding a bike  3  it is very convenient. If I go out by bike, it is  4  to find a place for parking it. Bikes are very cheap, so most people can buy one. There are three people in my family.  5  of us has a bike. My parents are teachers in my school. In the morning, Mum, Dad and I each  6  to school. However on a rainy day we walk to school, because the road is bad for riding. I think riding bikes can make us  7  . It not only helps us exercise more but also  8  the air clean. The bike is very important in Chinese people’s life. So riding bikes can help you to  9  more about China and the Chinese people. Now people in the world say China is the country of bikes because there are  10  bikes in China. I hope people all round the world like them.

1. A. eight years old          B. eight year old 

C. eight-year-old           D. eight-years-old

2. A. by        B. on        C. from         D. in

3. A. so         B. but       C. while         D. because

4. A. hard                    B. late           C. happy             D. easy

5. A. Each                    B. Both                   C. None                       D. Some

6. A. walk                    B. run            C. drive                        D. ride

7. A. strange     B. busy                   C. strong            D. poor

8. A. feels                    B. keeps                 C. sees                         D. likes

9. A. tell             B. know                  C. visit                          D. ask

10. A. so many     B. so much     C. too much   D. many too

实验题