【判断题】【消耗次数：1】
钢梁的受力形式主要有轴向拉伸或压缩和偏心拉压。（）
①
正确
②
错误
参考答案：
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【多选题】
对于在弹性范围内受力的拉（压）杆，以下说法中，（ ）是正确的。
①
长度相同、受力相同的杆件，抗拉（压）刚度越大，轴向变形越小
②
材料相同的杆件，正应力越大，轴向正应变也越大
③
杆件受力相同，横截面面积相同但形状不同，其横截面上轴力相等
④
正应力是由于杆件所受外力引起的，故只要所受外力相同，正应力也相同
⑤
E质地相同的杆件，应力越大，应变也越大
随机题目
【单选题】
Great changes __________ in our institute in the last few years.
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have taken place
②
has taken place
③
took place
④
had taken place
【单选题】
-- Sorry I kept you waiting.
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I’m sad
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I don’t care
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That’s all right. There’s no hurry
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No, not at all
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You have lovely children.
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No, no, no. They are not
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Oh, no, no
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Sorry, I must be leaving now, because there’s a meeting.
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Oh, no, you can’t
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Yes, you can leave if you like
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Do you really have to go? Couldn’t you at least stay for another cup of tea?
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Oh, no. I don’t understand
【单选题】
A company meeting provides an opportunity to ----ideas and discuss any problems that come up within the workplace.
①
reach
②
share
③
take
④
lead
【单选题】
Hi, is Mary there, please?
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Hold on. I’ll get her
②
No, she isn’t here
③
Yes, she lives here
④
Yes, what do you want