问题 单项选择题

管涌形成的条件中,除具有一定的水力条件外,还与几何条件有关,下列叙述正确的是()。

 

A. 不均匀系数Cu<10的土比不均匀系数Cu>10的土更容易发生管涌

B. 不均匀系数Cu>10的土比不均匀系数Cu<10的土更容易发生管涌

C.与不均匀系数Cu没有关系

D.级配不良的土比级配良好的土更易发生管涌

答案

参考答案:B

单项选择题 A3/A4型题
完形填空

Books which give instructions on how to do things are very popular in the USA today. Thousands of books __1__this begin with __2__ that start with the words "how to". Many of "how to " books __3__ advice on careers. They tell you how to __4__ a career and how to __5__ it. If you fail, __6__, you can buy a book called How to Turn Failure into Success. If you never make any money __7__, you need a book called How to Live on Nothing.

One of the most popular types of books is one that __8__ you with personal problems. If you are unhappy with your __9__, you can read How to Love Every Minute of Your Life. If you are tired of books on __10__, you may prefer a book called How to Make Yourself Sad.

Many of these books help people use their __11__ time better. Some people __12__ books which will give them __13__ information about sports, hobbies and travel. __14__ people use their free time to make __15__ and improvements on their homes. They like books which given __16__ instructions on how to repair things.

__17__ have "how to" books become so __18__? Probably because life has become so complex. Today people have far more problems to __19__. "How to" books help people __20__ modern life.

1.A. as    B. like     C. of       D. about

2.A. books      B. sentences    C. words D. titles

3.A. give B. take    C. follow      D. suggest

4.A. pick B. search C. find    D. choose

5.A. get into   B. take part into     C. succeed in D. fail in

6.A. however B. but      C. besides     D. otherwise

7.A. for all     B. in all   C. at all D. all too

8.A. gets B. helps   C. does    D. deals

9.A. book       B. study  C. work   D. life

10.A. sadness  B. happiness   C. anger  D. violence

11.A. free       B. busy   C. working     D. meaningful

12.A. lose       B. sell     C. use    D. want

13.A. little      B. much  C. useful D. useless

14.A. Other    B. Others C. The other   D. The others

15.A. money   B. fun     C. cleaning     D. repairs

16.A. one-by one   B. step-by-step       C. little-by-little     D. day-by-day

17.A. Why     B. How   C. When  D. Where

18.A. good     B. little   C. popular      D. bad

19.A. answer  B. do      C. work out    D. solve

20.A. go away with       B. deal with    C. take with    D. fight with