问题
单项选择题
阀控型舵机油路在（）应设安全阀。
A．定量泵与换向阀之间
B．换向阀与转舵油缸之间
C．A和B
D．A或B
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
阀控型舵机油路在（）应设安全阀。
A．定量泵与换向阀之间
B．换向阀与转舵油缸之间
C．A和B
D．A或B
参考答案：C
| 阅读理解。 | ||||||||||||
| Harry Potter is a set of popular books created by J.K.Rowling in Britain. The books tell us some stories about a talented wizard (天才魔法师), Harry Potter. When he was eleven years old, he had an unhappy life. However, a strange letter changed everything. It said he was accepted by Hogwart's a magic school which was closed to the common people. All kinds of adventures (冒险) happened to Harry from then on. He met Ron Weasley and Hermione Granger on his way to school. They became good friends later. Harry did well in his lessons and worked hard to play magic. Harry always had a positive attitude(态度)when he faced the difficulties. With the help of his friends, he tried his best to beat the enemies. Finally, the world peace came back. Smile appeared on everyone's face. If someone wants to know what takes place in the magical world, he will have to read the set of books by himself! | ||||||||||||
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