1809年,法国人阿贝尔发明了用()的方法A、铁罐保存食物 B、铝罐保存食物 C、木盒保

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问题:

1809年,法国人阿贝尔发明了用()的方法

A、铁罐保存食物

B、铝罐保存食物

C、木盒保存食物

D、玻璃瓶保存食品

考点:包装概论包装概论题库
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糖尿病酮症酸中毒的临床表现()

A.原有症状加重或首次出现三多伴乏力

B.食欲减退,恶心,呕吐,极度口渴,尿量增多

C.有代谢性酸中毒症状

D.严重脱水伴循环衰竭体征

E.呼吸深快,呼气中有烂苹果味

题型:单项选择题

在反应X+2Y=R+2M中,已知R和M的相对分子质量之比为22:9,当1.6gX与Y完全反应后,生成4.4gR,则在此反应中Y和M的质量比是 [ ]

A.16:9

B.23:9

C.32:9

D.46:9

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阅读理解

     Are some people born clever, and others born stupid? Or is intelligence developed by our

environment and our experiences? Strangely enough, the answer to both these questions is yes.

To some degree our intelligence is given to us at birth, and no amount of special education can

make a genius (天才) out of a child born with low intelligence. On the other hand, a child who

lives in a boring environment will develop his intelligence less than one who lives in rich and varied

surroundings. Thus the limits of a person's intelligence are fixed at birth, but whether or not he

reaches those limits will depend on his environment. This view, now held by most experts can be

supported in a number of ways.

     It is easy to say that intelligence is to some degree something we are born with. The closer the

blood relationship between two people, the closer they are likely to be in intelligence. Thus if we

take two unrelated people at random from the population, it is likely that their degrees of intelligence

will be completely different. If on the other hand we take two identical twins, they will very likely

be as intelligent as each other. Relations like brothers and sisters, parents and children, usually have

similar intelligence, and this clearly suggests that intelligence depends on birth.

     Imagine that now we take two identical twins and put them in different environments. We might

send one, for example, to a university and the other to a factory where the work is boring. We

would soon find differences in intelligence developing, and this indicates that environment as well as

birth plays a part. This conclusion is also suggested by the fact that people who live in close contact

with each other, but who are not related at all, are likely to have similar degrees of intelligence.

1. By using the example that two people closer in blood relationship are closer in intelligence, the

    writer wants to prove _________.

A. intelligence is given at birth

B. intelligence can be developed by environment

C. intelligence can be developed by experience

D. education plays an important part in the development of education

2. A child who lives in rich and varied surroundings turns out higher in intelligence because ________.

A. his family is rich and therefore can afford to develop his intelligence

B. he can break the limits of intelligence fixed at birth

C. his family is rich and provides him with various healthy food

D. these surroundings are likely to help him reach the limits of their intelligence

3. The writer of this article believes that _________.

A. the development of one's intelligence is determined by many things working together

B. environment plays the most important role in the development of intelligence

C. education plays the most important role in the development of intelligence

D. birth plays the most important role in the development of intelligence

4. The best title for this passage might be __________.

A. The Answer to a Question  

B. Birth and Environment

C. Intelligence

D. Intelligence and Education

题型:单项选择题

在对737飞机燃油箱进行燃油渗漏类别分析中,严重渗漏类(heavyseep)的定义是()

A.观察15分钟后油迹区域不超过1.5英寸

B.观察15分钟后油迹区域不超过4英寸

C.观察15分钟后油迹区域不超过6英寸

D.观察15分钟后油迹区域超过6英寸

题型:单项选择题

简述娱乐场所治安管理的措施。

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