在电轧刀的铭牌上,标定的电压值有()几种。A.220V、110V、36V B.220

题型:单项选择题

问题:

在电轧刀的铭牌上,标定的电压值有()几种。

A.220V、110V、36V

B.220V、24V、15V

C.220V、36V、24V

D.110V、36V、24V

考点:美发师中级美发师中级美发师题库
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______,自由之思想,历千万祀,与天壤而同久,共三光而永光。(陈寅恪《王国维先生纪念碑》)

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如图,△ABC中,AB的垂直平分线交AC于D,如果AC=5cm,BC=4cm,那么△DBC的周长是(  )
A.6 cmB.7 cmC.8 cmD.9 cm
题型:单项选择题

根据《土石坝碾压式沥青混凝土防渗墙施工技术规范(试行)》SD220-87,下列关于沥青混凝土防渗墙施工的说法正确的是()。

A.正式施工前,应进行现场铺筑试验,以确定沥青混合料的施工配合比,施工工艺参数,并检查施工机械的运行情况等

B.接触沥青的人员,应发给必要的劳保用品和享受保健待遇

C.接触沥青的人员,应定期进行体内沥青吸入量检查

D.沥青混凝土制备场所,要有除尘、防污、防火、防爆措施,并配备必要的消防器材

E.斜坡施工应设置安全绳或其他防滑措施。机械由坝顶下放至斜坡时,应有安全措施,并建立安全制度。对牵引机械和钢丝绳、刹车等,必须经常检查、维修

题型:单项选择题

On September 22, 2007, 108 Chinese cities took part in Car-Free Day, a global event held every year, for the first time.

China became the world’s second-largest auto market and third-largest car-maker in 2006. It has also become the second-largest greenhouse gas producer in the world, and is rapidly catching up with the United States. In this sense, China’s participation will greatly promote the Car-Free Day movement.

The number of cars on the road is going up rapidly in China. In Beijing, about 1,000 new cars are added to the streets on an average day.

Cars certainly offer people plenty of freedom to move around. But in many Chinese cities, appearance of too many cars has turned into a major problem. Getting stuck in traffic jams is an everyday experience for drivers.

Even worse is the environmental impact(影响)caused by cars. According to a national report, on a “smog day”, 79 percent of the air pollution is caused by cars.

The growing number of traffic accidents is another problem. Over 100,000 people die from traffic accidents every year in China, which is by far the highest number of road deaths in the world.

108 cities’ participation in Car-Free Day shows growing public concern about the traffic and environmental problems caused by cars.

On this day, all cars were banned from running in selected areas of the participating cities. People were encouraged to walk, cycle and use public transport. According to experts, the carbon monoxide in the atmosphere produced by cars was reduced by 3,000 tons on Car-Free Day.

With cleaner air and smoother traffic flow on the day, more cities will hopefully want to join the event next year. And more people might share the hope that Car-Free Day is not just on September 22, but a possibility 365 days of the year.

59. From the passage, we can know that China ______.

A. has the world’s highest number of road deaths

B. has the world’s largest auto market

C. is the world’s largest greenhouse gas producer

D. is the world’s second-largest car-maker

60. Which of the following is discussed in the passage?

A. The causes of car growth in China.  

B. The effects of car growth in China.

C. The history of World Car-Free Day. 

D. The popularity of World Car-Free Day.

61. Car-Free Day in China will ______.

A. be held all the year round

B. stop air pollution and traffic jams

C. attract more people to join in

D. reduce the production of cars

题型:单项选择题

以下属于华为3层交换机的是()。

A、S3026

B、S3026V

C、S3352

D、S3552

E、S3528P

F、S3928P

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