问题 问答题 简答题

老区汽油分馏塔塔顶馏出物中为什么要加氨?

答案

参考答案:

加氨的目的是防止裂解气中的CO、SO等酸性气体以及少量的有机酸腐蚀设备。

阅读理解与欣赏

与荀彧追伤郭嘉书

曹操

       郭奉孝年不满四十,相与周旋十一年,阻险艰难,皆共罹之。又以其通达,见世事无所凝滞,欲以后事属之。何意卒尔失之,悲痛伤心!今表增其子满千户,然何益亡者!追念之感深。且奉孝乃知孤者也,天下人相知者少,又以此痛惜,奈何奈何! (选自自读课本第五册《求知如采金》)

注:郭嘉,字奉孝,和荀彧一样,都是曹操重要谋士。

1.分别解释下面二句话中的“以”字。

(1)又以其通达      以:                                                       

(2)欲以后事属之   以:                                                      

2.解释下面的词。

      皆共罹之      罹:                                         

3.把下面两句话译成现代汉语。

(1)何意卒尔失之      翻译:                                                                                                     

(2)然何益亡者          翻译:                                                                                                     

阅读理解

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

     Every boy and every girl expects their parents to give them more pocket money. Why do their parents

just give them a certain amount? 1_____

     The amount of money that parents. give to their children to spend as they wish differs from family to

family. 2_____ Some children get weekly pocket money. Others get monthly pocket money.

     First of all, children are expected to make a choice between spending and saving. Then parents should

make the children understand what is expected to pay for with the money. At first, some young children

may spend all of the money soon after they receive it. Parents are usually advised not to offer more money

until it is the right time. 3_____

     In order to encourage their children to do some housework, some parents give pocket money if the

children help around the home. Some experts think it not wise to pay the children for doing that. 4_____ 

     Pocket money can give children a chance to experience the three things they can do with the money.

They can spend it by giving it to a good cause. They can spend it by buying things they want. 5_____

Saving helps children understand that costly goals require sacrifice. Saving can also open the door to future

saving and investing for children.

A. They can save it for future use.

B. Timing is another consideration.

C. As helping at home is a normal part of family life.

D. Some children are not good at managing their pocket money.

E. Learning how to get money is very important for every child.

F. One main purpose is to let kids learn how to manage their own money.

G. By doing so, these children will learn that spending must be done with a budget.