高压试验合闸前应先检查哪些元件及要素？

阅读理解。

     A little boy came to a new town with his parents. His name was Peter. His family was very rich (富有). They had a driver (司机) and they had a cook, and a lot of servants (仆人).

     Peter was going to a new school. On the first day his mother said to him, "Peter, be modest at your

new school. Don't say we are rich." And Peter said, "Yes, Mommy." So Peter went to school. The first

class was composition (作文). The subject of the composition was My Family. 

     "My name is Peter. My family is very poor (贫穷). Both my father and my mother are very poor. Our driver is very poor and the cook is poor, the other servants are poor…"

1. Who did Peter live with?

A. The driver  

B. The cook  

C.The servants

D.His father and mother

2.How is Peter's family?

A. Very poor  

B. Very rich  

C. Very big  

D. Very friendly

3. When did Peter's mother tell him not to say "We are rich."

A. Before going to a new town

B. On the first day he went to a new school

C. In the composition class

D. After school

4. Guess! What's "be modest" in Chinese?

A. 贫困    

B. 小心  

C. 自信    

D. 谦虚

5. According to (根据) Peter's composition, you know _______.

A. Peter's family is very poor  

B. Peter has a car in his family

C. Peter's father is a cook      

D. Peter's composition is good

下列对实验的相关叙述，正确的是[ ]

A．探索淀粉酶对淀粉和蔗糖的专一性作用时，可用碘液替代斐林试剂进行鉴定

B．纸层折法分离叶绿体色素的实验结果表明，叶绿素b在层析液中溶解度最低

C．调查人群中某种遗传病的发病率时，应选择有遗传病史的家系进行调查统计

D．鉴定蛋白质时，应将双缩脲试剂A液和B液混合以后再加入待检组织样液中

A、B、C、D、E五种有机物，它们分子中C、H、O三种元素的质量比都是6∶1∶8。在通常状况下，A是一种有刺激性气味的气体，对氢气的相对密度为15，其水溶液能发生银镜反应。B的相对分子质量是A的6倍，C和B是同分异构体，两物质都是具有甜味的无色晶体，但B常用作制镜工业的还原剂。D和E两物质的蒸气密度都是2.68 g·L^－1(标准状况下)，它们也互为同分异构体。但D的水溶液能使石蕊试液变红，而E是不溶于水的油状液体，具有水果香味。试写出A、B、C、D、E的名称和结构简式。

A________，________。

B________，________。

C________，________。

D________，________。

E________，________。

医院信息系统中病案信息系统使用的软件主要功能包括（）.

A.信息的输入

B.信息的存储

C.信息的加工

D.信息的传输

E.以上均是

SF6气瓶应直立保存，并应远离（）和（）的地方。