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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

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正确

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相关考题

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。
未知题型
Directions ：For this part，you are supposed to write an essay in English in 100 -120words based on the following information. Remember to write it clearly.
假设你是李华，10月20日是你18岁生日，发邮件邀请你的外国朋友Jack来你家参加生日聚合。主要内容包括：
聚会时间：周六晚7点到l0点；
参加人员：朋友和同学；
活动内容：聚餐、唱歌、跳舞、游戏等。
注意：1．词数应为100左右；
2．开头语已为你写好。
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