问题 单项选择题 A1/A2型题

关于固定阳极X线管阳极的结构组成下列正确的是()

A.阳极头、阳极柄、阳极帽

B.靶面、阳极柄、阳极帽

C.阳极头、转子、阳极帽

D.靶面、转子、阳极帽

E.靶面、钼杆、阳极帽

答案

参考答案:A

解析:固定阳极X线管的阳极中不含转子和钼杆,靶面也不能代表阳极头的组成。

阅读理解

阅读理解。

     Climbing a mountain is hard work. But one step (脚步) after another finally brings a person to the

top. Along the way, he can stop and look around. And the higher he climbs, the more wonderful his view

is. If he keeps climbing, he will have a new world before him. He will have a new way to see everything.

     Now learning a foreign language is something like climbing a mountain. This new language can give

you a new view of life. And it is more than a look at the surface of things. It can open the way into

people's minds and hearts and into a culture that is very different from your own culture. This will make

you richer, richer in things that money can't buy. Even though you never set foot (踏上) on a ship or a

plane, you can be an armchair traveler through books.

     The mountain climber stops now and then to enjoy the scenery around him. Reading is just like this.

If you are interested in it, you will find fun in books.

1. Is climbing a mountain easy?

    ____________________________________________________________

2. What will he have if he keeps climbing?

    ____________________________________________________________

3. Can learning language open the way into people's minds and hearts?

   ____________________________________________________________

4. How will learning language make you?

    ____________________________________________________________

5. Where will you find fun if you are interested in reading?

    ____________________________________________________________

判断题