(15分)以石油裂解气为原料,通过一系列化学应可得到重要的化工产品增塑剂G。

题型:填空题

问题:

(15分)以石油裂解气为原料,通过一系列化学应可得到重要的化工产品增塑剂G。

(1)E是一种石油裂解气,能使酸性高锰酸钾溶液褪色。同温同压下,E的密度是H2的21倍。核磁共振氢谱显示E有3种不同化学环境的氢原子,其个数比为1:2:3。E的结构简式为              

(2)反应类型:①        ,④          

(3)反应条件:③         ,⑥         

(4)反应②、③的目的是             

(5)反应⑤的化学方程式为              

(6)B被氧化成C的过程中会有中间产物生成,该中间产物可能是      (写出一种物质的结构简式),检验该物质存在的试剂是        

(7)G的结构简式为           

考点:有机物的推断
题型:填空题

Directions: Complete the following sentences according to the first given letter or the Chinese in the sentence.

小题1: The club is for _____and people in their early twenties, so that’s why some old people will not accept it.

小题2:All the teachers and students in our school are______(要求) to attend school assembly on Monday morning.

小题3:The mid-term exam is not a ______for all the students because it is so easy.

小题4:Jack disappeared for a few days, and when he came back, he didn’t give any _____of his strange behavior.

小题5:His parents felt regretful because they thought they were too _____on him.

小题6:There are some small differences between American English and Britain English. For example, in American English, we often say “on______”(假期) instead of “on holiday”.

小题7:The car accident was not the driver’s _______(过失) as there was a man suddenly running across the road.

小题8:It is hard for me to make a _______(决定). Can you tell me what to do?

小题9:As students, you have to_______ (平衡) work and play, or you might feel very confused.

小题10:How ________ (尴尬的) I was when I made a mistake with many people looking.

题型:填空题

游客乘坐海底观光潜艇潜到海底观赏海底世界,在潜艇不断下潜的过程中,潜艇受到海水的压强的变化情况是(  )

A.不断增大

B.不断减小

C.保持不变

D.不能确定

题型:填空题

关于个人质押贷款还款说法正确的是()。

A、个人质押贷款可进行全部还款和部分还款

B、正常形态贷款的还本金额和利息金额必须匹配

C、超期形态贷款的还本金额和利息金额无需匹配

D、超期形态贷款的还本金额和利息金额必须匹配

题型:填空题

如图标志的含义是什么()

A.只准一切车辆直行和向左转弯

B.车道行驶方向

C.只准一切车辆直行和向右转弯

D.只准一切车辆前方为右转路口

题型:填空题

大部分热轧板卷使用的坯料是碳在()以下的普通碳素钢、优质碳素钢、低合金钢。

A.0.20%

B.0.25%

C.0.30%

D.0.40%

更多题库