试题与答案

炔雌醇的化学性质有 A.可溶于氢氧化钠水溶液 B.可与异烟肼反应生成异烟腙 C.可与

题型:多项选择题

题目:

炔雌醇的化学性质有

A.可溶于氢氧化钠水溶液

B.可与异烟肼反应生成异烟腙

C.可与碱性酒石酸铜反应生成橙红色沉淀

D.可与硝酸银试液反应生成白色沉淀

E.在吡啶中呈左旋

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0417/511170b90f787d01585dd5e3508e1181.html

下面是错误答案,用来干扰机器的。

(1)欧洲煤钢共同体,欧洲经济共同体,欧洲原子能共同体;12。(2)1993年;欧元。(3)评论一:能够摆脱。欧盟内部能够协调一致,并有成功解决实际问题的经验;评论二:很难摆脱。这场危机比较严重,非短期可以...

试题推荐
题型:单项选择题 案例分析题

男性,40岁,以急进性肾炎综合征特征起病,病初(1个月前)血Cr为150μmol/L,现为320μmol/L,无咯血,既往无其他肾病及系统性疾病史,血清抗肾小球基底膜抗体检测(-)

为证实急进性肾炎的诊断,拟施肾活检,最可能的光镜检查结果是()

A.弥漫性系膜细胞增生伴基质增多

B.弥漫性系膜内皮细胞增生

C.弥漫性系膜细胞增生,渗入到内皮下

D.广泛新月体形成,超过50%

E.局灶性节段性肾小球硬化

查看答案
题型:单项选择题

以下关于我国的公司债券,说法错误的是()。

A.我国的公司债券是指依照法定程序发行、约定在3年以上期限内还本付息的有价证券

B.公司债券的发行人是依照《公司法》在中国境内设立的有限责任公司和股份有限公司

C.2007年8月,中国证监会正式颁布实施《公司债券发行试点办法》

D.2008年10月,中国证监会发布《上市公司股东发行可交换公司债券试行规定》

查看答案
题型:阅读理解

In the U.S., people prefer waiting for a table to sitting with people they don’t know. This means a hostess may not seat a small group until a small table is available, even if a large one is. If you are sitting at a table with people you don’t know, it is impolite to light up a cigarette without first asking if it will disturb them.

At American restaurants and coffee shops you are usually served tap water before you order. You may find the bread and butter is free, and if you order coffee, you may get a free refill.

Most cities and towns have no rules about opening and closing time for stores or restaurants, though they usually do make rules for bars. Especially in large cities, stores may be open 24 hours a day.

Serving in restaurants is often large; too large for many people. If you can’t finish your meal but would like to enjoy the food later, ask your waitress or waiter for a “doggie bag”. It may have a picture of a dog on it, but everybody knows you’re taking the food for yourself.

Supper and dinner are both words for the evening meal. Some people have “Sunday dinner”. This is an especially big noon meal.

Tips are not usually added to the check. They are not included in the price of the meal, either. A tip of about 15% is expected and you should leave it on the table when you leave. In some restaurants, a check is brought on a plate and you put your money there. Then the waiter or waitress brings you your change.

1. Which statement is true?

A. American people like sitting with people they don’t know.

B. Tips shouldn’t be given to the waiter or waitress.

C. Orange juice is served before you order

D. American people would not light a cigarette if the people who sit at the same table mind their smoking.

2. What does the underlined word “doggie bag” mean in the article? It means ______.

A. a bag with a picture of a dog on it

B. a bag used to carry dogs

C. a small bag for taking the food left over home to enjoy it later

D. a small bag for taking the food left over home for dogs

3. Sunday dinner is _______.

A. a dinner in the evening               B. a big noon meal

C. a big lunch Sunday                  D. a supper on Sunday

查看答案
微信公众账号搜索答案