直线加速器加速电子是依靠() A.脉冲发生器 B.四端循环器 C.加速管 D.电子枪

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问题:

直线加速器加速电子是依靠()

A.脉冲发生器

B.四端循环器

C.加速管

D.电子枪

E.速调管或磁控管

考点:LA医师(放射治疗X刀伽马刀)LA物理师(伽马刀物理师)LA物理师(伽马刀物理师)题库
题型:单项选择题

生酱油加热的作用主要有哪些?

题型:单项选择题

阅读理解。               

       Eating healthily is important for you. Good eating habits are good for you in your whole life. Your

body needs energy to work. Where does energy from? It's from the food you eat every day. But it's not

from one kind of food. It needs many different kinds of foods. To balance your diet, you should try to eat different foods. You are what you eat. For example, if you eat too much meat but little other foods, you

will be fat. In fact, our body needs nutrients (营养) from many kinds of food like meat, vegetables, fruits

and sugars. Don't forget to brush your teeth after eating sugars, because sugars are bad for your teeth.

阅读短文,判断T列句子正(T)误( F)  。   

( )1. It is very important to have a good eating habit.

( )2. Your body only needs water to work.  

( )3. Your body needs different kinds of foods.

( )4. Sugars are good for your teeth.

题型:单项选择题

在冶炼钢铁过程中发生的一个主要反应是:3CO+Fe2O3 

 高温 
.
 
3CO2+2Fe.关于这个反应的理解不正确的是(  )

A.反应需在高温的条件下进行

B.CO发生了氧化反应

C.Fe2O3是氧化剂

D.这个反应既是氧化还原反应又是置换反应

题型:单项选择题

根据成就需要理论,建立友好和亲密的人际关系的欲望称为()。

A.权力需要

B.归属需要

C.成就需要

D.情感需要

题型:单项选择题

索赔成立应具备的条件,最全面的是()。

A、既有既成事实;有责任归属的证据;有索赔资料和数据

B、既有既成事实;有承包方的合同;有索赔资料和数据

C、有责任归属的证据;有索赔依据和数据

D、有承包方的合同;有索赔资料和数据

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