需要100g的酒精,不用天平,只用量筒,应该量出酒精的体积是_________c

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问题:

需要100g的酒精,不用天平,只用量筒,应该量出酒精的体积是_________cm3.(酒精的密度是0.8×103千克/米3). 

考点:密度公式的应用
题型:填空题

How often one hears children wishing they were grown-ups, and old people wishing they were young again. Each age has its pleasures and its pains(痛苦), and the happiest person is the one who enjoys what each age gives him without wasting his time in useless regrets(后悔).

Childhood is a time when there are few responsibilities(责任) to make life difficult. If a child has good parents, he is fed, looked after and loved, whatever he may do. It is impossible that he will ever again in his life be given so much without having to do anything in return. What’s more, life is always giving new things to the child--- things that have lost their interest for older people because they are too well-known. But a child has his pains: he is not so free to do what he wishes to do; he is repeatedly being told not do something or being punished for what he has wrongly done.

When a young man starts to earn his own living, he can no longer expect others to pay for his food, his clothes, and his room, but has to work if he wants to live comfortably. If he spends most of his time playing about in the way he used to as a child, he will go hungry. And if he breaks the laws of society(社会) as he used to break the laws of his parents, he may go to prison. If, however, he worked hard, keeps out of trouble and has good health, he can have the greatest happiness of building up for himself his own position(地位) in society.

小题1:What is the happiest person according to the passage?

A.A child who can do whatever he likes.

B.An old person who lives in a comfortable life.

C.A grown-up who no longer expects other to pay for him.

D.A person who never wastes his time in his whole life.小题2:Which of the following is true, according to the second paragraph?

A.Life for a child is fairly easy.

B.A child is always loved whatever he does.

C.If much is given to a child, he must do something in return.

D.Only children are interested in life.小题3:What is the main idea of the passage?

A.Life is not enjoyable since each age had some pains.

B.Young men can have the greatest happiness if they work hard.

C.Childhood is the most enjoyable time in one’s life.

D.One is the happiest if he can make good use of each age in his life.小题4:What will the fourth paragraph most probably discuss following this passage?

A.Examples of successful young men.

B.How to build up one’s position in society.

C.Joys and pains of old people.

D.What to do when one has problems in life.

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患者,女性,10岁,舌背反复出现红色斑片1年,病损形态时常变换,一般无疼痛。检查:舌背及舌缘有一红色区域,丝状 * * 萎缩,周边为黄白色的围线,界限分明。

以下可能是该病的病因,除了()。

A.舔舌习惯

B.消化不良

C.肠寄生虫

D.病灶感染

E.遗传因素

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甲公司2010年5月13日与客户签订了一项工程劳务合同,合同期9个月,合同总收入500万元,预计合同总成本350万元;至2010年12月31日,实际发生成本160万元。甲公司按实际发生的成本占预计总成本的百分比确定劳务完工程度。在年末确认劳务收入时,甲公司发现,客户已发生严重的财务危机,估计只能从工程款中收回成本150万元。则甲公司2010年度应确认的劳务收入为()万元。

A.228.55

B.160

C.150

D.10

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治疗肝火犯胃,呕吐乔酸,黄连常配伍的药物是()

A.丁香

B.干姜

C.花椒

D.小茴香

E.吴茱萸

题型:填空题

简述价值论与数量论货币需求说的比较。

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