88元APS辅导一对一试听课火热报名

3K留德

如果你对于APS审核复习无从下手；如果你不了解审核官的套路；如果你想全程模拟APS审核...3K留德本次APS辅导一对一试听课活动绝对为你量身打造。



我们没有花哨的宣传方式，有的是勤勤恳恳的工作态度；
我们没有夸大其词的本事，有的是实实在在的通过率；
我们没有闲聊乱侃的功夫，有的是扎扎实实的专业知识和外语水平。



如果你仍然对我们的实力有所怀疑，请给我们这个机会，我们会在试听课中向你展示，什么是最专业的APS辅导，什么是最灵活的面谈技巧，什么是最清晰的准备思路。
如果你认为我们专业靠谱，你可以在试听课后报名APS辅导课程；如果你认为在我们的试听课中已学到准备技巧，你可以灵活运用我们传授的方法自己准备审核面谈。




试听课时长：60分钟
课程费用：88 RMB
课程内容：专业课，基础课，实验课，公选课，审核模拟（课程内容可由学员指定）
面向群体：准备机械大类学科（机制，机电，车辆，能源，船海）APS的准留德华，每人只有一次试听课机会
课程时间：根据学员与老师的时间共同商量，原则上先报名的学优先安排试听课。


联系我们
微信客服：dreikde
微信公众号：dreikdeu
淘宝店铺：3K留德

3K留德

【APS机械笔试题一（附答案）】

The graphic below shows a typical hydraulic circuit and some important components. Please explain firstly the principle of the whole system and then each simple component.


Brief answer:

Principle of the whole system:
This is the structure of a 4 way 3 position directional valve. The 4 ways mean that the whole system has A, B, P and T ways to connect the hydraulic pipes. 3 positions mean that the system has three working positions thus left position, right position and neutral (original) position.
When the neutral position is connected, the circuit is blocked up, P and T will be connected so the hydraulic oil will flow back in the tank, so the system doesn’t work.
When the left position is connected, P and A also B and T will be connected with each other, the oil will flow to the left side of the piston cylinder and push the rod to move outward, the oil in the right side will flow back through BT to the tank.
When the right position is connected, P and B also A and T will be connected with each other, the oil will flow to the right side of the piston cylinder and push the rod to move back. The oil in the left side will flow back through AT to the tank.
 
Simple component:
Hydraulic pump: supply fluid to the components in the system. According to the displacement there are constant pump and variable pump. The commonly used pumps are gear pump and vane pump. (If there is enough time, please also explain the principle of gear pump and vane pump)
 
One way valve: Valves are used to regulate, direct and coXXXol the oil and system by opening, closing or partially obstructing various passageways. By using one way valve in the system the oil can just flow in one direction, the opposite direction will be blocked up. In this system the one way valve is used after the pump in order to protect the oil from flowing backward in the pump.

3K留德

【优秀师资介绍】

车辆老师：Chow



介绍：国内211，985本科优秀毕业生，德国TU9硕士毕业（毕设1.3），就职于大型德企。
Ta的感言：审核只是留德第一步，但往往第一步是最艰难的一步。我的经验，我的经历，我的专业知识，我的语言水平以及我对行业发展的研究和观点，都将成为你的！

3K留德

【机械老师：Christina】



介绍：国内211，985本科优秀学姐，德国TU9硕士在读（毕设阶段），德企实习经验。
Ta的感言：APS是每一个留德华最初的挑战，也是改变命运的开始。接受挑战，沉着应对，你就离成功更进一步。作为先行者的我们会一直陪在你左右，支持你不断前进！