2011年3月11日,日本发生9级大地震,为防止灾区的病菌传播,防疫人员使用了“

来源:www.tikuol.com 发布时间:2017-04-26 13:20
题型:问答题

问题:

2011年3月11日,日本发生9级大地震,为防止灾区的病菌传播,防疫人员使用了“漂白粉”来杀菌消毒,“漂白粉”的有效成分为次氯酸钙[化学式为:Ca(ClO)2].请回答:

(1)钙、氯、氧三种元素的质量比为______.

(2)次氯酸钙中氯元素的质量分数是______(精确到0.1%).

(3)若灾区饮用水每50kg至少需要漂白粉250g,则将一桶水(约20kg)进行消毒至少须加漂白粉______g.

答案:

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题型:填空题

在跳棋比赛中,用“石头、剪子、布”决定谁来跳有______种可能的结果,比赛规则是______的(填公平或不公平)

题型:阅读理解

Galaxy saw a man and a woman who communicated with the sign language at the train station when she was on the way home one evening. She noticed that the woman asked the man for the direction. He told her that he did not know. Galaxy decided to help them. She had learned the sign language when she served as a volunteer in the deaf and mute (聋哑) school. Then she showed the woman the direction and left her email address to them in case they needed her help later.

She received an email from that man the next day. Kazrim was his name. Galaxy replied his mail sincerely. They both started chatting online soon after and began seeing each other. Although they only communicated with the sign language, it never bothered her. 

Galaxy was fond of him gradually. Obviously, Kazrim was the same too. He presented Galaxy with a bunch of sunflowers and asked her sincerely. “Are you willing to be my girlfriend?”

Galaxy was pleasantly surprised. She requested him to give her some time to persuade her parents.

As she had expected, her parents were very angry after they had learned of their love story.

Galaxy explained, “Kazrim is an excellent and a very optimistic person. He has a very positive attitude towards life and work. He cares for others always. He is 100% better than the normal. Moreover, the mute is still a human. He should possess a perfect and wonderful love.”

Her parents asked to see him, then. The very worried Galaxy took Kazrim home a few days later. When they were on the train, Kazrim told her, “I’m going to tell your parents that I’ll be looking after you well with all my life!” Galaxy was deeply moved.

As soon as they had entered the house, Galaxy introduced him to her parents. She said, “This is Kazrim.” Just right after her speech, an unbelievable thing happened. Kazrim threw the gift away and held her in his arms tightly.

He said, “YOU CAN TALK?” It was the same question that Galaxy wanted to ask, too.

The four people were shocked all of a sudden. As a matter of fact, Kazrim always believed that Galaxy was a mute and he still fell in love with her deeply.

小题1:How did Galaxy and Kazrim get to know each other?

A.They met each other by chance.

B.They were introduced to each other.

C.They once studied at the same university.

D.They both served in a deaf and mute school.小题2: How did Galaxy probably communicate with Kazrim before she took him home?

A.Writing words on paper.

B.Using the sign language.

C.Judging from his expression.

D.Speaking her native language.小题3: What did Galaxy expect her parents to do?

A.To have a talk with Kazrim.

B.To prepare for her marriage.

C.To treat Kazrim as a normal man.

D.To accept Kazrim as her boyfriend.小题4:What can we learn about the two young people from the passage?

A.They fell in love at the first sight.

B.They cheated each other to win love.

C.They mistook each other for being mutes.

D.They ignored the anger of Galaxy’s parents.

题型:多项选择题

项目的盈利能力的主要分析指标有( )。

A.投资回收期

B.内部收益率

C.资产负债率

D.财务净现值

E.资本金净利润率

题型:单项选择题

企业将物流系统全部卖给或承包给第三方物流供应商称为()。

A.物流系统剥离 

B.物流战略联盟 

C.物流系统接管 

D.物流业务管理外包

题型:单项选择题

打开一个已编辑的WORD文档,要存储成模板供以后调用,可用()方法实现。

A.直接存盘

B.另存为WORD的默认文档

C.另存为.DOT文件格式

D.另存为.DOC文件格式