《工程力学》命题作业
如图所示的平面桁架，在铰链H处作用了一个20kN的水平力，在铰链D处作用了一个60kN的垂直力。求A、E处的约束力和FH杆的内力。
计算二重积分
Studying Abroad
In recent years, studying abroad has been popular in our country. More and more middle school students would like to go abroad through mediators.
Is it good or bad to study abroad?
In my opinion, on one hand, it has some advantages. Studying abroad can provide better studying conditions. People can make rapid progress in their foreign language study and it can also help widen their field of vision. Meanwhile, young students can learn advanced science and technology from foreign countries and spread cultures of different nations. Besides, studying abroad can also improve the ability of students’ self-dependence
On the other hand, it has disadvantages. For example, because of the lack of living experience and poor capability to take care of themselves, they may feel lonely and homesick. In addition, high living expenses and tuition fees will become a heavy burden upon their parents.
So I think whether studying abroad or not should be decided according to oneself and one's family. It is not right to follow others. By the way, with the development of our society, China is getting more and more stronger. It also has a good studying condition. We can learn the same thing in our own country and spend little money. With the development of the national economy, Chinese people are getting richer and richer that their style of living and the way of
thinking are changing in different ways. One of the great changes is that more and more parents incline to send their children abroad to get higher education which is quite different from the one in China.Some of them even send the students in middle school or elementary school to different countries. Therefore, we have lots of teenager students studying abroad. Personally I think, some of the teenagers are not mature enough to take care of themselves, especially some of them even have no ideas on how to study. They are not independent. When they are at home, they depend on their parents or grandparents. Therefore, it is easy for them to get lost both in their life and in their study. My suggestion is that we should not send the teenagers abroad too early, and the best time for being abroad to study is after the graduation from the college or university. Perhaps, that is much better.
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