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单项选择题

()是铁路运输生产活动的一项重要内容，直接关系到安全正点和运输效率

A．车站
B．发送列车
C．接发列车
D．机车车辆

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判断题

带的离心应力取决于单位长度的带质量、带的线速度和带的截面积三个因素

单项选择题

In nearly every town or city center in the UK，on most days of the week you can find one or more people standing in the street selling a magazine 21 The Big Issue．These people are all 22 ，but they are not begging for money． 23 ，they are selling the magazine as a means(手段)of 24 a small but respectable living．
The Big Issue magazine was 25 in 1991 by Jon Bird and Gordon Roddick after they 26 that there were many homeless people who were 27 on the streets of London．On a previous(之前的) 28 to New York，one of them had seen homeless people selling a newspaper known as Street News 29 they decided to set up something 30 in the British capital．
Nowadays，The Big Issue has 31 all over the UK and there are even different versions(版本)of the magazine in different parts of the 32 ．The sellers buy each magazine from the organization for seventy pence and then sell it to a 33 for one pound fifty．By working with The Big Issue，many people have been 34 to escape from homelessness，and 35 many of them have moved on to new jobs and new lives．
请选出最合适的选项（）

A.printed
B.spelt
C.called
D.stuck

单项选择题

JavaScript可以直接绘图吗？
A、可以，通过SVG绘图。
B、不可以，通过D3
C、不可以，通过Echart可以
D、不可以，通过阿里的DataV可以。

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