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【单选题】
对一个长度为n的无序序列进行快速排序,最坏情况下的时间复杂度为( )。A.
O( n 2 )
B.
O( n )
C.
O( n log n )
D.
O(log n )
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反馈参考答案：
举一反三
【单选题】--- Must we go there together? ---______ you ________ he goes there, only one student is needed.
A.
Both; and
B.
Either; or
C.
Neither; nor
【单选题】一组混凝土试件的抗压强度试验结果分别为40.6Mpa、46.0 Mpa 、53.8 Mpa,确定该组混的抗压强度值应为( )Mpa。
A.
46.7
B.
48.0
C.
46.8
D.
46.0
【单选题】We are a team so we must assist one another _____ completing the task．
A.
with
B.
to
C.
at
D.
in
【单选题】昨天我试验人员在混凝土力学室(温度18°C)对一组标准试件(150×150×150mm)进行试验,其试件破坏荷载分别为625.8KN、603.5 KN、504.0 KN,请确定该组混凝土立方体抗压强度值为:()
A.
26.8 Mpa
B.
27.3 MPa
C.
25.4 Mpa
D.
试验结果无效
【单选题】听力原文： We must admit that their job is not the most romantic one in the world. We often take dustmen for granted. Perhaps because they usually come very early in the morning, before most people are up,...
A.
Because they are often early risers.
B.
Because they often do their work unnoticed.
C.
Because they were born to do their work.
D.
Because people never stop to talk to them.
【简答题】一组6块石灰岩石料的饱水单轴抗压强度试验结果分别为：214.5kN、215.6kN、 195.2kN、197.5kN、199.4kN、205.0kN，试件采用边长为50mm的标准立方体试件。试计算试验结果，并分析该石灰岩能否用于配制C30的水泥混凝土?
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