下列关于超声波的表述,正确的是()。 A.频率不同的声波在同一介质中的传播速度不同

题型:单项选择题

问题:

下列关于超声波的表述,正确的是()。

A.频率不同的声波在同一介质中的传播速度不同

B.波长和频率成正比

C.超声在人体软组织中的平均传播速度是1460m/s

D.相同频率的超声在不同介质中传播声速相同。

E.声速与介质的密度成正比

考点:超声医学与技术(医学高级)技术部分技术部分题库
题型:单项选择题

A公司拟吸收合并甲公司,合并相关资料显示,甲公司分别欠付乙公司货款100万元、丙公司货款80万元,丙公司欠付A公司租金80万元。根据公司法律制度的规定,下列说法正确的有( )。

A.A公司吸收合并甲公司后,两个公司的法人主体资格同时归于消灭

B.A公司吸收合并甲公司后,丙公司可以向A公司主张债权债务抵销

C.A公司吸收合并甲公司时,乙公司可以要求甲公司提供履行债务的担保

D.A公司吸收合并甲公司时,应当分别由甲公司和A公司的董事会作出合并决议

题型:单项选择题

阅读理解。

     As parents,you will never stop feeling the need to protect your kids.One of the most difficult

parts of being a parent is learning how to let go.

      Let your teens make mistakes.You show that you trust your teens enough to let them try

something on their own,and you let your teens learn from experience.Since the saying is true

that experience is the best teacher,letting your teens make mistakes can help them develop

instinct and decisionmaking ability.

     When you let your teens make mistakes,it does not mean you are turning them loose

without any guidance.It simply means that you are giving up some control over their life and

allowing your teens to test the waters.It is the only way your teens will develop a sense of

self and a level of independence to be successful adults.

     When you let your teens make mistakes,it also means that you allow your teens to be

less than perfect.It means allowing your teens to be human,to be imperfect.Let your teens

know that it is OK to make mistakes and OK to try new things,even if they are not successful.

     Since the other way that teens learn best is by example,be willing to allow yourself to

make mistakes,too.If you let your teens make mistakes,it won't go over well if you are beating

yourself up over making a mistake.Show your teens that you can forgive yourself,too,and your

teens will be more likely to believe you when you forgive their mistakes as well.

     Twentyfirst century teens live in a different world from the world most of us grow up in.

They have instant access to information and overexposure to the media.It's not as simple as

it was,but that does not mean you cannot still raise thoughtful,conscientious,productive teens.

You won't be able to protect them from everything,and it's OK to let your teens make

mistakes,because what is really important is being there to help them learn from the mistakes

they made and apply what they learned to becoming better people.

1.When you let your teens make mistakes,you believe ________.

A.they have already got enough experience

B.they can do things independently

C.they have the best teachers at school

D.they can make their own decisions in life

2.Why do parents let the teens make mistakes?

A.To learn that life isn't easy.

B.To become a perfect person.

C.To draw lessons from experiences.

D.To succeed early in life.

3.How do parents help teens learn best?

A.To let kids make as few mistakes as possible.

B.To let teens themselves go to try new things.

C.To protect teens from any danger of mistakes.

D.To set a model by forgiving themselves for mistakes.

4.Why is it difficult to educate modern teens?

A.Because they can easily get information from the Internet.

B.Because they take making mistakes for granted.

C.Because they have a strong sense of independence.

D.Because they know how to make use of their mistakes.

5.What might be the most suitable title for the passage?

A.Ask your teens to correct mistakes.

B.Let your teens make mistakes.

C.Warn your teens of making mistakes.

D.Protect your teens from any mistakes.

6.用30左右概括文章大意

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题型:单项选择题

商友贷产品具有灵活的担保方式,主要有以下哪些()。

A、本(异)地资产抵押

B、市场管理方(法人)资产抵押+保证担保

C、商铺经营权质押+保证担保

D、日均存款保障+保证担保

E、商户联保

题型:单项选择题

下列函数的运行结果是( )。
#include<iostream.h>
int f(int a,int b)
int c;
if(a>b)c=1;
else if(a==b)c=0;
else c=-1;
return(c);
void main()
int i=2,j=3;
iht p=f(i,j);
cout<<p;

A.-1
B.1
C.2
D.编译出错,无法运行

题型:单项选择题

人员素质测评是采用()相结合的科学方法,对各类人员的德、智、体等素质进行系统的测量与评定的过程。

A.定质和定量 

B.定性和定量 

C.定位和定性 

D.定性和定质

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