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【单选题】
变压器中通过 ( ) 形成闭合回路的路径称为磁路。A.
线圈
B.
C.
气隙
D.
磁场
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举一反三
【单选题】在人类的共鸣器官中,口腔的上部从前往后分别是什么?
A.
下唇、下齿、舌尖、舌面、舌根
B.
上齿、齿龈、软腭、硬腭、小舌
C.
上唇、上齿、齿龈、软腭、硬腭、小舌
D.
上唇、上齿、齿龈、硬腭、软腭、小舌
【单选题】Our school has been set up in , believe it or not , ______ used to be a temple ten years ago.
A.
which
B.
what
C.
that
D.
where
【单选题】We don’t believe the reason _________ he gave for his being absent from school.
A.
that
B.
why
C.
because
D.
for which
【单选题】在人类的共鸣器官中,口腔的下部从前往后分别是什么?
A.
上唇、上齿、齿龈、硬腭、软腭、小舌
B.
下唇、舌尖、舌面、舌根
C.
下唇、下齿、舌面、舌尖、舌根
D.
下唇、下齿、舌尖、舌面、舌根
【单选题】Which fact does the article lead you to believe?
A.
The Bronte sisters thought that they were men.
B.
England’s first training school for nurses was in Ohio.
C.
There are more men than women in professional jobs.
D.
Women find it necessary to work harder than before.
【简答题】设总体 X 具有概率密度 其中 为未知参数, 是来自总体 X 的样本, 为相应的样本观察值. (1)求 的最大似然估计量;(2)求 的矩估计量;(3)问求得的估计量是否是无偏估计量.
【单选题】One method of categorizing consumers refers to a large group of older men (called Rugged Traditionalists) who believe in the traditional, old-school gender roles. The Rugged Traditionalist is describe...
A.
psychological
B.
individual
C.
social
D.
cultural
【简答题】I believe that the school is prmarily a social institution. Education being a social process, the school is simply that form of commuity life in which all those agencies are concenrated that wil be mo...
【简答题】设总体X具有概率密度 其中θ＞0为未知参数，X 1 ，X 2 ，…，X n 是来自X的样本，x 1 ，x 2 ，…，x n 是相应的样本观察值．
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