莽草酸是合成治疗禽流感的药物-达菲(Tamiflu)的原料之一。莽草酸是A的一种

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问题:

莽草酸是合成治疗禽流感的药物-达菲(Tamiflu)的原料之一。莽草酸是A的一种异构体。A的结构简式如下

(1)A的分子式是__________。

(2)A与溴的四氯化碳溶液反应的化学方程式____________________(有机物用结构简式表示)

(3)A与氢氧化钠反应的化学方程式(有机物用结构简式表示)是____________________

(4)17.4g A与足量碳酸氢钠溶液反应,计算生成二氧化碳的体积(标准状况)__________。

(5)A在浓硫酸作用下加热可得到B(B的结构简式为),其反应类型是_______。

(6)B的同分异构体中既含有酚羟基又含有酯基的共有_____种,写出其中一种同分异构体的结构简式

____________。

考点:羧酸的通性烯烃的通性消去反应分子式同分异构体
题型:填空题

根据短文内容判断正(T)误(F)。

      It's Sunday morning. The students of Class 3 are giving their classroom a good cleaning. Miss Huang,

their teacher, is working with them. The children are busy. Some are carrying water; some are cleaning the

windows; others are sweeping the floor. Zhang Hua is putting up a map on the wall. It is a map of China.

Wang Fei and Wei Qing are mending some broken chairs. The children are listening to the radio while they

are working. The classroom looks nice and bright after the cleaning. The children are very happy. They go

home for lunch at noon.

( ) 1. The children are playing in their classroom on Sunday morning.

( ) 2. Miss Huang, their mother, is working with them.

( ) 3. There is a map of China on the wall.

( ) 4. Two of them are repairing the broken chairs.

( ) 5. They are singing while they are working.

题型:填空题

* * 3D游戏,是以一个3位自然数为投注号码的 * * ,投注者从000-()的数字中选择一个3位数进行投注。

题型:填空题

人力资源管理科学化的基础是()

题型:填空题

当前,影响人类健康的最主要因素是()。

A.行为生活方式

B.环境因素

C.医疗保健服务

D.生物学因素

E.心理因素

题型:填空题

以下程序运行后的输出结果是 【12】
#include <iostream.h>
main()int i=10,j=0;
doj=j+ i; i--;while(i>2);
cout<<j;

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