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【单选题】
Which of the following statements is most precise in introducing the economic development of China?A.
The economy of China advanced 6.4 percent year-on-year in the March quarter of 2019, slightly above market expectations of a 6.3 percent expansion.
B.
GDP of China advanced almost the same in the March quarter of 2019 as in the previous quarter.
C.
The growth rate of China’s GDP has been remaining above 6 percent this year.
D.
China’s GDP advanced 6.4 percent year-on-year in the March quarter of 2019, the same pace as in the previous quarter but slightly above market expectations of a 6.3 percent expansion.
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【单选题】下面哪一个是White检验和BP检验的区别（）
A.
White 检验是用来检验一个线性回归模型中是否存在异方差性的，而 BP 检验用来检验模型中是否存在共线性
B.
White 检验是用来检验一个线性回归模型中是否存在共线性的，而 BP 检验用来检验模型中是否存在异方差性
C.
White 检验中回归元个数多于 BP 检验中回归元个数
D.
BP 检验中回归元个数多于 White 检验中回归元个数