关于x的方程k2x2+2(k-1)x+1=0有两个实数根,则k的取值范围是( )

题型:选择题

问题:

关于x的方程k2x2+2(k-1)x+1=0有两个实数根,则k的取值范围是(  )
A.k<
1
2
B.k≤
1
2
C.k<
1
2
且k≠0
D.k≤
1
2
且k≠0
考点:一元二次方程根的判别式
题型:选择题

从2001年7月1日至2002年1月1日某类住宅楼市场价格每月递增1.5%,其后至2002年11月1日则每月递减0.5%,而从2002年11月1日至2003年4月30日的市场价格基本不变,以后每月递增1%。估价人员拟从以下几个交易实例中选取三个作为可比实例,并估算该住宅楼2003年8月31日的正常单价(如需计算平均值,请采用简单算术平均)。

可比实例C的房地产状况调整系数为()。

A.100/98

B.100/101

C.98/100

D.100/100

题型:选择题

眼耳鼻舌身意六根识若贪执外境,分别会有哪些过患?请用比喻一一说明。你对其中的哪个比较有体会?为什么?

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阅读填空。

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

     If you are hungry, what do you do? Have your favorite meal and stay quiet after that.__1__   But it

never lets you know, because you keep it busy thinking about your friends or favorite stars. So it silently

serves your needs and never lets itself grow. When mind loses its freedom to grow, creativity gets a full

stop. This might be the reason why we all sometimes think "What happens next?", "Why can't I think?"

     __2__   Why reading but not watching TV? It is because reading has been the most educative tool

used by us right from childhood. Since it develops other aspects of our life, we have to get help from

reading.

     Once you read a book, you run your eyes through the lines and your mind tries to explain something to you. __3__  Now this seed is unknowingly used by you to develop new ideas. If it is used many times, the same seed can give you great help to relate a lot of things which you would have never thought of in your

wildest dreams!

     This is nothing but creativity.  __4__   Within no time you can start talking with your friends in English

or any other language and never run out of the right words.

     So guys, do give food for your thoughts by reading, reading and more reading. __5__  Go and get a

book!

A. The interesting part of the book is stored in your mind as a seed.

B. Why not do some reading while you are hungry?

C. Just like your stomach,your mind is also hungry.

D. Now what are you waiting for?

E. Hunger of the mind can be actually solved through wide reading.

F. Reading can help you make more friends, too.

G. Also this makes a significant contribution to your vocabulary

题型:选择题

肝硬化食管静脉曲张破裂大出血后发生的变化,下述哪项不正确()

A.BUN增高

B.脾脏缩小

C.腹水减少

D.诱发肝性昏迷

E.诱发肝肾综合征

题型:选择题

运输经济学的研究内容有哪些?

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