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【单选题】
甲班学生平均成绩80分，标准差8.8分，学生平均成绩70分，标准差8.4分，因此(    )。
A.
甲班学生平均成绩代表性好一些
B.
学生平均成绩代表性好一些
C.
无法比较哪个班学生平均成绩代表性好
D.
两个班学生平均成绩代表性一样
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A.
正确
B.
错误
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It marked the beginning of manufacturing small cameras
B.
It met the need of photographers in America and Europe
C.
It made picture-taking suddenly popular among ordinary people
D.
It made the work of professionals more enjoyable
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【多选题】There are essential components in a spray dryer, they are .
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atomization
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C.
separation
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A.
considerate
B.
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considering
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【判断题】绝对定位的位置是相对于窗体而言的,不受元素的父元素定位方式的影响。
A.
正确
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【多选题】短期政府债券的特征包括( )。
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面额大
B.
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【判断题】纵断面的设计线是由 直线、圆曲线 组成的。
A.
正确
B.
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【单选题】Although there had been an astonishing variety of small cameras developed in the 1880s, it was not until George Eastman introduced the Kodak in 1888 that the mass appeal of photography seized America ...
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【多选题】短期政府债券的特征包括( )。
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面额大
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违约风险小
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交易成本高
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流动性强
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【简答题】翻译下列句子: 1.Logistics is the process of planning, implementing, and controlling the effective and efficient flow of goods and services from the point of origin to the point of consumption. 2.Outbound lo...
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