关于加速运动和减速运动所致的颅内血肿,下列哪项是错误的A.减速性暴力点的对冲部位一脑

题型:单项选择题

问题:

关于加速运动和减速运动所致的颅内血肿,下列哪项是错误的

A.减速性暴力点的对冲部位一脑内血肿

B.减速是暴力点一硬脑膜外血肿

C.加速是暴力点一硬脑膜外血肿

D.减速性暴力点的对冲部位一硬脑膜外血肿

E.减速性暴力点的对冲部位一硬脑膜下血肿

考点:中西医结合执业助理医师中西医结合外科学颅脑疾病
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卡托普利的抗高血压作用机制是()。

A.抑制肾素活性

B.抑制血管紧张素Ⅰ转化酶的活性

C.抑制β-羟化酶的活性

D.抑制血管紧张素Ⅰ的生成

E.阻断血管紧张素受体

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反转录病毒在分子生物学研究和基因治疗中起到重要作用的是()

A.基因传导载体

B.基因修饰载体

C.基因表达载体

D.基因转移载体

E.基因载体

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已知某砖混结构建筑物体积为900m3;其中毛石带形基础的工程量为110m3。假定1m3毛石带形基础需要用砌石工0.66工日,且在该项单位工程中没有其他工程需要砌石工,则1000m3建筑物需要用砌石工为( )工日。

A.65.34

B.80.67

C.150.00

D.185.19

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The fourth round of heavy smog to hit Beijing in four weeks has sent more people to the hospital with respiratory (呼吸的) illnesses and led to calls for laws to control the pollution.

Pan Shiyi, a celebrity, said he is planning to propose a Clean Air Act to the local government. As a representative to the Beijing Municipal People's Congress, he started an online survey at 9:20 a.m. Within three hours, more than 25,000 web users, or 99 percent of total respondents (应答者) , welcomed his proposal.

They have good reasons to stand alongside Pan. The latest round of haze(雾霾)reduced visibility to under 500 meters in many parts of the city. The smog has also led to a great increase in respiratory illnesses, particularly among children and the elderly. Anxious parents and doctors almost all blame the smoggy air for the illnesses. Though most schoolchildren are home for the winter holidays, the bad air can easily move indoors. Besides, ordinary medical masks fail to provide enough protection, so some people have turned to gas masks.

The causes of the frightening smog are rather mysterious, though experts blame too much emissions (排放) and the mountains around Beijing that trap pollution in winter, unless there is enough wind to clear it away. Some critics blamed China’s top two oil firms, China National Petroleum Corp and China Petrochemical Corporation, saying the companies’ outdated production technologies produce large quantities of high-polluting gas fuel.

Meanwhile, some Beijingers have moved their brainstorming discussion to computers. If Pan’s proposal for a Clean Air Act is adopted, netizens say the new law should include items providing for “car-free days” in times of smog, higher standards for vehicle fuel, stricter limit to industrial and engine gas emissions, and more effective protection for the public.

Beijing is not the only city that has ever lost the blue sky. Five days of thick fog caused thousands of deaths in Britain in December 1952, urging the government to pass the first Clean Air Act in 1956, which introduced smokeless zones and cleaner fuels to reduce pollution. That may provide some experience for Beijing to refer to.

小题1:Why did Pan Shiyi started an online survey?

A.To know the public’s opinions on pollution

B.To tell people the danger of the smoggy weather

C.To call on people to support his proposal

D.To collect supporting evidence for his proposal小题2:What can we learn from the passage?

A.People are clear about the causes of the smoggy weather.

B.Children staying indoors will not get respiratory illnesses.

C.Smog is worse for people with lower resistance to diseases.

D.Masks can give people protection against the smoggy weather.小题3:Britain is mentioned in the last paragraph to ______.

A.suggest Beijing should learn from other countries

B.let people know many places have this problem

C.tell people the situation in Britain is worse

D.call on the government to pass Britain’s Clean Air Act小题4: What’s the best title for this passage?

A.The Use of Gas masks and Engines

B.Beijingers Call for Clean Air Act

C.Effective Protection for Blue Sky

D.The Mysterious Causes of the Scary Smog

题型:单项选择题

设y=lnx,则y’=()。

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