一台良好的机床进行空运转应达到哪些要求

阅读短文，回答问题。

    In the time it takes you to read this sentence, the population of the world will have grown by ten people. That

may not sound much, but it is 9,000 people in an hour, 1.5 million a week, or 79 million a year. That is the same

as adding most of the population of Germany to the world every year.

    Most of these new people were born in developing countries. These countries are found in much of Africa,

South America and parts of Asia. In the developed countries of Europe and North America, the population is

growing very slowly. This is because women in these countries have, on average, only one or two children. In

the developing countries, many women have five or more children. In 1950, around one quarter of the world's

population lived in the developed countries. By 2050, these countries will be home to only around one tenth of

the world's people.

     In the developing countries, more than one billion people already live below the poverty (贫困) line. These

people do not have enough food to eat and they live in poor housing; children get little or no time at school and

people suffer (遭受痛苦) from many kinds of diseases.

    At the beginning of the 21st century, the world's population was around six billion people. The UN has said

that the world's population will level off at 12.5 billion people by the year 2100. Other groups think the world's

population will continue to grow, reaching 14 billion people before it becomes stable (稳定的), or even falls.

1. How many people are added to the world's population an hour? 

   __________________________________________________

2. Developing countries can be found in what areas of the world?

   __________________________________________________

3. In 1950, what percentage (百分率) of the world's population lived in developing countries?

   __________________________________________________ 

4. What are examples that show people are living below the poverty line?

   __________________________________________________

5. There will be twelve and a half billion people on the earth in 2100 according to the UN, won't there?

A、B两车从同一地点开始运动的v-t图象如图所示，则从0时刻起到两车相遇所需时间为（     ）

A．2s     B．3s    C．4s     D．s

刑法第266条规定：“诈骗公私财物，数额较大的，处三年以下有期徒刑、拘役或者管制，并处或者单处罚金；数额巨大或者有其他严重情节的，处三年以上十年以下有期徒刑，并处罚金；数额特别巨大或者有其他特剐严重情节的，处十年以上有期徒刑或者无期徒刑，并处罚金或者没收财产。本法另有规定的，依照规定。”

请用犯罪构成理论分析该条确认的犯罪构成。

活体生测可以在（）h内对蔬菜中的农药残留量有所了解。

A.0.5

B.3

C.10

D.20

男性，28岁，头晕乏力一年半，皮肤散在出血点，血象Hb65g/L，RBC2×10¹²/L，WBC1.8×10⁹/L，白细胞分类：淋巴细胞0.80、中性粒细胞0.20，骨髓增生低下，诊断为（）

A.急性再障

B.慢性再障

C.骨髓纤维化

D.脾功能亢进

E.白血病