液压支架安全阀当外载超过额定压力时，安全阀不能开启有几种原因？

小华今年从农业大学毕业了，准备回家乡湖南自己创业．下列选项中最合适的是（　　）

A．放牧细毛羊

B．栽种甜菜

C．饲养生猪

D．种植咖啡

Sure，it's good to get along well with your teacher because it makes the time you spend in the classroom more pleasant.

And yes，it's good to get along well with your teacher because，in general，it's smart to learn how to get along well with the different types of people you'll meet throughout your life.

In fact，kids who get along well with their teachers not only learn more，but they're more comfortable about asking questions and getting extra help.This makes it easier for them to understand new materials and do their best on tests.When you have this kind of relationship with a teacher，he or she can be someone to turn to with problems，such as problems with learning or school issues.

Here is a question：what if you don't get along well with your teachers? In fact，teachers want to get along well with you and enjoy seeing you learn.But teachers and students sometimes have personality clashes(个性冲突)，which can happen between any two people.If you show your teacher that you want to make the situation better，he or she will probably do everything possible to make that happen.By dealing with a problem like this，you learn something about how to get along with people who are different from you.

However，if a certain teacher isn't your favorite，you can still have a successful relationship with him or her，especially________.Here are some of those responsibilities：

Attend class ready to learn.

Be prepared for class with the right pencils，books，and completed assignments.

Listen when your teacher is talking.

Do your best，whether it's a classroom assignment，homework，or a test.

小题1:The passage is written for________.

A．teachers

B．advisers

C．students

D．parents小题2:According to the passage，getting along well with your teachers will make you________.

A．get the best scores in the exams

B．have more pleasant time in the classroom

C．have no problems with study

D．get a better seat in the classroom小题3:The underlined word “that” in the fourth paragraph refers to________.

A．getting along very well with classmates

B．the disappearance of personality differences

C．a better relationship between you and your teacher

D．the happy time you have in the classroom小题4:“________” can be filled in the blank.

A．if you fulfill your basic responsibilities as a student

B．if you are easy­going and helpful

C．if you know some basic social skills

D．if you are thought of as a good student

在“其他项目清单”中，招标人为可能发生的工程量变更而预留的金额为( )。

A．预留金
B．预备费
C．基本预备费
D．暂列金额

在中华人民共和国境内从事畜禽的遗传资源保护利用、繁育、饲养、经营、运输等活动，适用中华人民共和国畜牧法。

砂砾坝体填筑单元工程中标准项目之一是：坝体填筑必须在前一填筑层验收合格后进行。这一项目称为( )。

A．保证项目

B．基本项目

C．允许偏差项目

D．试验项目