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【单选题】
两样本均数比较的，检验，P<0.05，按a= 0.05水准，认为两总体均数不同。此时若推断有误，则犯第一类错误的概率A.
P <0. 05
B.
P>0. 05
C.
P=0. 05
D.
P=0. 95
E.
P未知
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举一反三
【单选题】When a number of people ______ together in a conversational knot, each individual expresses his position in the group by where he stands.
A.
accumulate
B.
pack
C.
squeeze
D.
cluster
【单选题】在气调养护中,采用“充二氧化碳降氧法”,要达到抑制霉菌生长的目的,必须
A.
二氧化碳含量达到25%
B.
氧含量低于2%
C.
二氧化碳含量在40%以下
D.
氧含量达到4%
【简答题】Summary Although people may have 1 views about his most precious possession, all start with the valid knowledge about the human body. It is composed of a 2 of tiny specialists—cells. The cell has thre...
【简答题】. Cloze Read the following passage and fill the blanks with appropriate words from the list. Note that there are more words in the list than blanks in the passage. assume better complementary deriv...
【单选题】下面关于VB的集成开发环境(IDE)的叙述中,不正确的是()。
A.
IDE是设计、调试、运行VB程序的工具。
B.
用户不能随意关闭IDE中的窗口。
C.
"窗体设计" 窗口是用来设计应用程序界面(窗体)的。
D.
打开 / 关闭各窗口的命令主要在IDE的"视图"菜单中。
【判断题】In a relational database, the three basic operations used to develop useful sets of data are select, form, and join.
A.
正确
B.
错误
【单选题】When a number of people ______ together in a conversational knot, each individual expresses his position in the group by where he stands.
A.
pad
B.
pack
C.
squeeze
D.
cluster
【判断题】The basic form of a speech outline includes three parts: Beginning, body and ending.
A.
正确
B.
错误
【单选题】When a number of people ______ together in a conversational knot, each individual expresses his position in the group where he stands.
A.
pad
B.
pack
C.
squeeze
D.
cluster
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