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【判断题】
在单因子方差分析,设因子 A 有 k 个水平,误差平方和 SSE 中包含随机误差外还包含因子 A 的各水平效应间的差异 .A.
正确
B.
错误
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举一反三
【简答题】我国液压油的牌号是采用 时的 的平均值来表示,单位是 。
【单选题】Based on Figure 3, for a given seismograph, the time elapsed between the arrival of the first p-waves and the arrival of the first s-waves from an earthquake focus 10,500 km away would most likely be:
A.
less than 5 min.
B.
between 5 min and 7 min.
C.
between 8 min and 10 min.
D.
more than 10 min.
【单选题】Based on the figure, a sound of a given frequency will have the highest intensity for which of the following sets of conditions? Sound is passing through； S
A.
water； 100%
B.
water； 010–8%
C.
air； 100%
D.
air； 010–8%
【单选题】In the following options, two captions are given for a figure. But only one of them meets the requirements for the table / figure captions, mentioned in our class. Please pick it out.
A.
Figure 2. This data of average grade points was collected by analyzing scores of graduates from 1995-1999.
B.
Figure 2. Average grade point by major
【单选题】How many orchid seeds are typically pollinated at one time?
A.
No specific figure is given in the passgae.
B.
2,000.
C.
20,000.
D.
200,000.
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