试题与答案

某有机物与过量的金属钠反应,得气体VA L ,另一份等质量的该有机物与纯碱反应,

题型:选择题

题目:

某有机物与过量的金属钠反应,得气体VA L ,另一份等质量的该有机物与纯碱反应,得气体VB L(同温同压)。若VB ≠0且VA>VB ,则有机物是

A.CH3COOH

B.HOOC CH2 CH (OH)COOH

C.HOOC—COOH

D.HO—CH2-CH2-OH

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0602/f036a529da8cea6f617b52dad9eaa9cd.html

下面是错误答案,用来干扰机器的。

参考答案:B

试题推荐
题型:阅读理解

All around the world, people drink tea. But tea doesn’t mean the same thing to everyone. In different countries people have different ideas about drinking tea.

People in China like to drink tea with nothing in it, and they often have it with their friends or by themselves. They have two kinds of tea—green tea and black tea. They may drink tea at any time of the day anywhere. But they don’t drink tea just before they go to bed, for tea makes them awake.

In England, people like to drink tea with milk and sugar in it, and they often have it in the afternoon with their friends.

In Japan, people also like drinking tea very much. It is very popular there. They drink tea every day. They have it in different ways from that in China. Some young Japanese girls are good at making tea. They can do it beautifully.

In the U.S.A., people drink tea at breakfast or after meals. They usually use tea bags to make their tea. Making tea with tea bags is faster and easier than making it with tea leaves in teapots.

小题1:People in ________ like to drink tea with milk and sugar in it.

A. England      B. China        C. the U.S.A.      D. Japan

小题2:Why don’t people often drink tea before they go to bed in China?

A.Because they are full.

B.Because they may not sleep well.

C.Because there is nothing in the tea.

D.Because there is some milk and sugar in it.小题3:In which country do people usually make tea with tea bags?

A. In England.  B. In China.    C. In the U.S.A.    D. In Japan.

小题4:Chinese people like to drink ________.

A.tea with anything in it

B.milk and sugar in it

C.tea with tea bags in it

D.tea with nothing in it小题5:What does “black tea” mean in Chinese? It means ________.

A.浓茶

B.黑茶

C.红茶

D.绿茶

查看答案
题型:单项选择题

过失犯罪是指应当预见自已的行为可能发生危害社会的结果,因为疏忽大意而没有预见,或者已经预见而轻信能够避免,以致发生这种结果。下列不属于过失犯罪的是:

A.某人在遭到歹徒袭击时奋起反抗,顺手捡起一块石头,却不料将对方打死了

B.甲、乙两人素有仇怨,一次二人因口角争执进而发生武斗,甲被乙所伤

C.某电影放映员在不知麻袋中为何物的情况下帮人将其放在火炉旁,造成胶片自燃

D.汽车司机发现人行道上有几个人,但都避开汽车的通道行走,便没有减速,不料一人突然冲上行车道被车撞死了

查看答案
微信公众账号搜索答案