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【单选题】
硼砂是治疗口腔炎中成药冰硼散的主要成分，其分子式为( )。A.
Ha3BO3
B.
Na2B4O7.8H2O
C.
Na2B4O7.1OH2O
D.
Na2BO3.1OH2O
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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】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．
【单选题】在教育过程中教师如果用简单粗暴、讽刺挖苦的做法来处理问题就违反了( )原则。
A.
知行统一
B.
发挥积极因素客服消极因素
C.
正面教育积极疏导
D.
尊重信任与严格要求相结合
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