【简答题】设 为来自总体 的样本 , 为样本均值,记 ,
【判断题】《中国统计年鉴》、普查(抽样调查)的数据都属于二手数据。
【简答题】( )接触器不会产生涡流和磁滞损耗,所以不发热。
【单选题】What figure of speech did the poet use in poetic line "Milton! thou shouldst be living at this hour:"
【单选题】Which poetic line does NOT concern Whitman’s belief in the true equality between men and women?
A.
“The Female equally with the Male I sing.”
B.
“In the faces of men and women I see God.”
C.
“A great city is that which has the greatest men and women.”
D.
“... every atom belonging to me... belongs to you.”
【单选题】关于公共场所提供的倚靠支撑,说法不正确的是()
【单选题】Which poetic line doe not concern Whitman's belief in the true equality between men and women?
A.
The female equally with the male I sing
B.
In the face of men and women I see God
C.
A great city is that which has the greatest men and women.
D.
…every atom belonging to me…belongs to you