土壤绝对年龄

题型:名词解释

问题:

土壤绝对年龄

考点:土壤学土壤学题库
题型:名词解释

看有元素的化合价在化学反应前后发生了变化,则该反应为氧化还原反应.据此可判断下列化学反应属于氧化还原反应的是(  )

A.CaO+H2O═Ca(OH)2

B.2H2O2═2H2O+O2

C.NaHCO3+NaOH═Na2CO3+H2O

D.HCl+AgNO3═AgCl↓+HNO3

题型:名词解释

根据短文内容和所给汉语提示,写出短文空白处单词的正确形式。每空限一词。

Only Mother Love is true love. It gives everybody everything all his life. When you are still a boy, mother takes good care of you as much as ____小题1:___(可能). In your waking hours, she always holds you in her arms. When you are ill, she stops her work right now to look after you and forgets about ____小题2:____(她自己). When you are growing up day by day, she feels very happy. ____小题3:____(在) cold winter days, she always tells you to put on more clothes. She always stands in the ____小题4:____(风) waiting for you back from school. When you hurry to leave home for school without breakfast, she always feels ____小题5:____(担心) about you at home. She pays ____小题6:____(注意)to your study and____小题7:____ (花费)much on your school things. When you make mistakes, she will give you some good advice and tell you to be ____小题8:_____(自信). When you ____小题9:____(成功)at school, you will see the___小题10:____(明亮的,灿烂的) smile on her face.

Mother is always ready to give everything she has to her children, not to receive. What true love that is in the world! We will remember Mother Love for ever!

题型:名词解释

支气管扩张的处理要点为()。

A.保持支气管通畅,排除痰液

B.控制感染

C.及时对诱因治疗

D.咯血的处理

E.手术

题型:名词解释

一种与生活愿望相结合并指向未来的想象叫()

A.表象

B.联想

C.做梦

D.幻想

题型:名词解释

加热炉出现正压时,以下分析不正确的是()。

A、烟道挡板开度太大

B、超负荷运行

C、瓦斯带油

D、燃料油用量突然增加

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