先进制造技术的特点

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问题:

先进制造技术的特点

考点:先进制造技术先进制造技术题库
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Walk to school every day? That will work, but not if you like sleep in. If you like bad smells and crowding(拥挤), the bus might be your best Choice. But why not a bicycle? A bicycle will get you there faster than your feet and will save your money.

This is why you see more bicycles than any other kind of transportation in China, about 500 million of them. That’s close to one for every two people in the whole country. But if you survey your class at school, you may will find a higher rate(比率).

Bicycles became popular because they are fun for people and at the same time help develop a strong body. No vehicle is better than a bicycle for enjoying an autumn weekend outside the city with parents or friends. You can travel on small, quiet paths. You also can park your bicycle beside the path wherever you want to stop to admire the beauty.

Cycling every day helps people build with city healthier hearts and stronger muscles(肌肉). Scientists say a 30-minute ride every day can help you lose weight.

Today, bicycles also are popular with city planners. They see bicycles as a good way to reduce heavy traffic. Unlike buses, bicycles produce no exhaust(尾气) and don’t burn energy. Many countries are encouraging more daily use of bicycles.

小题1:What’s the main subject of the passage?

A.Pollution reduction

B.Pollution of bicycle

C.Transportation of China

D.advantages of bicycling小题2:Which of the following statements may NOT help convince of bicycles?

A.Bicycling makes people stronger

B.Bicycles can travel on narrow paths

C.Many bicycles are stolen every year

D.Bicycles seldom(很少)get stuck in traffic jams小题3:The following paragraph is taken from the article above. Which paragraph should it follow?   South Korea expects a 10% increase in using bicycles by 2011. They say that could cut the cost of oil(石油)by $1.4 billion(十亿)during that period.

A.Paragraph 1

B.Paragraph 2

C.Paragraph 5

D.Paragraph 6小题4:We can tell from the story that _____

A.all Chinese students ride bicycles

B.if you ride a bicycle for 30 minutes a day, you’ll be thinner

C.there are no bicycles that burn energy

D.you can’t enjoy beautiful views unless you ride a bicycle小题5:Which of the following thing is a vehicle?

A.A train

B.A chair

C.An orange

D.A television

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如图所示,水平放置的U形光滑导轨足够长,处于磁感应强度B=5T的匀强磁场中,导轨宽度L=0.2m,可动导体棒ab质量m=2.0kg,电阻R=0.1Ω,其余电阻可忽略不计.现在导体棒ab在水平外力F=10N的作用下,由静止开始运动了s=40cm后,速度达到最大.求:

(1)导体棒ab运动的最大速度.

(2)当导体棒ab的速度为最大速度的一半时,棒ab的加速度.

(3)导体棒ab由静止达到最大速度的过程,棒ab上产生的热量.

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Most—Favored Nation Treatment

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张先生,患消化道溃疡多年,今突然呕血约 800ml,入院后立即给予输血,输入10 ml后病人主诉头痛、发热、四肢麻木、腰背部剧烈疼痛伴胸闷、气促。护士应首先考虑病人发生了

A.发热反应
B.过敏反应
C.溶血反应
D.空气栓塞
E.急性肺水肿

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合理应用抗菌药物

外科手术3类切口

A.需要预防用抗菌药物
B.治疗性应用抗菌药物
C.不需要预防用抗菌药物
D.预防性应用抗菌药物无效
E.不宜常规预防性应用抗菌药物

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