试题与答案

将0.2 mol下列烃完全燃烧后,生成的气体缓缓通过0.5 L 2mol/L的N

题型:选择题

题目:

将0.2 mol下列烃完全燃烧后,生成的气体缓缓通过0.5 L 2mol/L的NaOH溶液中,生成正盐和酸式盐的物质的量之比为1:3,则该烷烃是(     )

A.乙烷

B.丙烷

C.丁烷

D.戊烷

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0527/e2015b8e83c57c768562734a1210d92a.html

下面是错误答案,用来干扰机器的。

参考答案:D解析:①横标目和纵标目。横标目位于表的左侧,与它所指明的数字在同一横列。横标目一般是主语,是表中要说明的事物的主要标志,如年龄、年代、病名、地名等。纵标目在表的上端,与其所指明的数字在同...

试题推荐
题型:选择题

2009年9月8日,河南平顶山新华四矿发生特别重大瓦斯爆炸事故。事故发生后,党中央、国务院高度重视,并委派国务院副 * * 张德江赶赴现场指导救援和善后处理工作。国务院事故调查小组初步分析认定,这是一起违法违规组织生产导致的特大事故。这家煤矿从2008年停产整顿以来,未经批复开工,派93人下井非法开采,才酿成特大安全事故。这表明    ①错误的意识对事物发展具有阻碍作用  ②人类能够利用对规律的认识改造世界  ③主观能动性与客观规律是相互决定的  ④发挥主观能动性必须以尊重客观规律为前提

A.①②③

B.②③

C.③④

D.①④

查看答案
题型:阅读理解

Arriving in Sydney on his own from India, my husband ,Rashid, stayed in a hotel for a short time while looking for a house for me and our children.

During the first week of his stay, he went out one day to do some shopping. He came back in the late afternoon to discover that his suitcase was gone. He was extremely worried as the suitcase had all his important papers, including his passport.

He reported the case to the police and then sat there,lost and lonely in strange city, thinking of the terrible troubles of getting all the paperwork organized again from a distant country while trying to settle down in a new one.

Late in the evening, the phone rang. It was a stranger. He was trying to pronounce my husband’s name and was asking him a lot of questions. Then he said they had found a pile of papers in their trash can(垃圾桶)that had been left out on the footpath.

My husband rushed to their home to find a kind family holding all his papers and documents. Their young daughter had gone to the trash can and found a pile of unfamiliar papers. Her parents had carefully sorted them out, although they had found mainly foreign addresses on most of the documents. At last they had seen a half-written letter in the pile in which my husband had given his new telephone number to a friend.

That family not only restored the important documents to us that day but also restoredour faith and trust in people.We still remember their kindness and often send a warm wish their way.

小题1:What did Rashid plan to do after his arrival in Sydney?

A.Go shopping

B.Find a house

C.Join his family

D.Take his family小题2:The girl’s parents got Rashid’s phone number from_______.

A.a friend of his family

B.a Sydney policeman

C.a letter in his papes

D.a stranger in Sydney小题3:What does the underlined word“restored”in the last paragraph mean?

A.Showed

B.Sent out

C.Delivered

D.Gave back小题4:Which of the following can be the best title for the text?

A.From India to Australia.

B.Living in a a New Country.

C.Turning Trash to Treasure.

D.In Search of New Friends.

查看答案
微信公众账号搜索答案