按照不同类型具体说出氧气顶吹转炉炼钢需用哪些原材料?

题型:问答题 简答题

问题:

按照不同类型具体说出氧气顶吹转炉炼钢需用哪些原材料?

考点:炉外精炼工高级炉外精炼工高级炉外精炼工题库
题型:问答题 简答题

珍爱生命,善待生命,就应[ ]

①正确认识人和自然的关系

②珍爱自己的生命,对自己的生命身心健康负责

③善待生命

④多伐森林、多食野味

A、①②③

B、②③④

C、①③④

D、①②④

题型:问答题 简答题

阅读理解。

     Let's look at the picture. The boy's name is John. The girl in a white blouse (女衬衫) is his sister Rose. 

 The other one in a yellow blouse is his sister, Mary. John and his sisters are students in No.10 Middle

 School. The two sisters are in Class 3, Grade 1, and John is in Class 2, Grade 2. The man and the woman

 are their parents. Their father is a worker (工人) and their mother is a teacher. The old man and the old

  woman are John's grandfather and grandmother. They are doctors (医生). It is a happy family.

1. There are _____ people in the family.

    A. five          

    B. six            

    C. seven

2. Mary is in a _____ blouse and Rose is in a _____ one.

    A. yellow, white  

    B. white, yellow  

    C. yellow, blue

3. John's sisters are _____.

    A. in Grade 2    

    B. in the same (同样的) class      

    C. not students

4. Jack's _____ is a teacher.

    A. father                

    B. mother           

    C. grandmother

5. Jack's father is a _____.

    A. worker            

    B. teacher              

    C. doctor

题型:问答题 简答题

下列两组装置图都与我们学过的气体的制取和性质有关。

(1)根据下图(A~E)所给的装置,回答下列问题:

实验室用高锰酸钾制取和收集氧气,可选用的装置为          (填字母),反应方程式为                         ;实验室用过氧化氢制取和收集氧气,可选用的装置为           (填字母),反应方程式为                      ;实验室制取和收集二氧化碳,可选用的装置为        (填字母),反应方程式为                        

(2)在实验室中,集气瓶被称做“万能瓶”,用它可以组装成各种用途的装置,请仔细观察下列(F~K)各个装置的特点回答下列问题:

①实验室若用F装置收集氧气,则氧气应从    口进入(填导管口的字母代号)。

②若要收集一定体积的二氧化碳气体,应选用        装置。

③若要除去一氧化碳中的少量二氧化碳,同时用该瓶收集较纯净的一氧化碳,应选用      装置。

题型:问答题 简答题

高压并联电容器装置,当日投切不超过( )次宜采用手动投切装置。

A.2

B.3

C.4

D.5

题型:问答题 简答题

“大骨枯槁,大肉陷下,”属于下列哪项的表现

A.中焦火盛

B.脾虚有湿

C.阴虚火旺

D.脾气虚弱

E.脏腑精气衰竭

更多题库