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问题 单项选择题

200～250km/h区段，受电弓的动态包络线应符合（）

A.受电弓动态抬升量暂按120mm，左右摆动量直线区段为250mm，曲线区段为350mm

B.受电弓动态抬升量暂按120mm，左右摆动量直线区段为200mm，曲线区段为300mm

C.受电弓动态抬升量暂按160mm，左右摆动量直线区段为250mm，曲线区段为350mm

D.受电弓动态抬升量暂按200mm，左右摆动量直线区段为250mm，曲线区段为350mm

答案

参考答案：D

听力题

单词拼写（共10小题，每小题1分，满分10分）

1.Premier Wen Jiabao s__________ on Sunday that the final ends of the nation's economic growth is to

improve people's well-being

2.Chek Lap Kok Airport in Hong Kong is designed to a_____________ 80 million passengers a year.

3.It was impossible to r______________ the ink from the tablecloth.

4.That plane crash o_______________ only minutes after take-off.

5.The invitation was based on her research interests and p______________ experience in the field.

6. There wasn't enough e____________ to prove his guilt

7. No.1 middle school is s______________ in the north of Handan city.

8. It’s time that the government took m____________to reduce carbon dioxide emission.

9. He c_________________ bitterly that he had been unfairly treated.

10.APEC is the most i____________ forum(论坛) in the Asian-Pacific region and one of the most dynamic organizations for economic cooperation in the world.
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单项选择题

在电子商务下，物流的运作是以______为中心的。

A．信息

B．商品

C．企业

D．客户
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