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【单选题】
同样材料、同样截面尺寸和长度的两根管状细长压杆两端由球铰链支承,承受轴向压缩载荷,其中,管a内无内压作用,管b内有内压作用。关于二者横截面上的真实应力σ(a)与σ(b)、临界应力σ cr (a)与σ cr (b)之间的关系,有如下结论。则正确结论是 。
A.
σ(a)>σ(b),σ cr (a)=σ cr (b)
B.
σ(a)=σ(b),σ cr (a) cr (b)
C.
σ(a) cr (a) cr (b)
D.
σ(a) cr (a)=σ cr (b)
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【单选题】Our monitor requested that ________. [     ]
A.
all the class studied more carefully the problem
B.
the problem was more carefully studied
C.
with great care the problem could be studied
D.
all the class study the problem more carefully
【简答题】猪肉韭菜馅包子,每个100克,其中未发酵的小麦粉40克,五花肉40克,韭菜25克,蒸熟,冷冻
【简答题】A.He liked to drink two cups of coffee before the professor's class. B.One cup of coffee is enough for him to keep awake in the class. C.The professor's class is very interesting. D.The professor's cl...
【单选题】There is no________ that students will listen attentively in class, if they are _____ The World Cup in South Africa at night
A.
probability ; accustomed to
B.
possibility ; addicted to
C.
need ; drunk with
D.
chance ; familiar with
【单选题】在包装类和基本数据类型进行转换过程中,将基本数据类型的值转为引用数据类型,通常叫做()?
A.
开箱
B.
拆箱
C.
闭箱
D.
装箱
【单选题】在包装类和基本数据类型进行转换过程中,将引用数据类型的对象转为基本数据类型的操作,通常叫做()?
A.
装箱
B.
关箱
C.
开箱
D.
拆箱
【判断题】肌肉无法变得更短时叫被动不足。
A.
正确
B.
错误
【简答题】猪肉韭菜馅包子,每个 100 克,其中 未发酵 的小麦粉 40 克,五花肉 40 克,韭菜 25 克,蒸熟,冷冻
【单选题】---_____the boys in our class enjoy ________the World Cup? ---Yes, they____.
A.
Do , watching, do
B.
Do , to watch, are
C.
Does, watching, does
【单选题】注射用油最适合的灭菌方法是
A.
湿热灭菌
B.
干热灭菌
C.
辐射灭菌
D.
微波灭菌
E.
紫外灭菌
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