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【单选题】
多组均数两两比较时,若不用 q 检验而用 t 检验,则(( )。A.
结果更合理
B.
结果都一样
C.
会把一些无差别的总体判断为有差别
D.
会把一些有差别的总体判断为无差别
E.
以上都不对
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【单选题】These companies succeeded because they were the first companies to make use of the ____________ of the internet and was thought highly of by some experts.
A.
potential
B.
possibility
C.
prejudice
D.
precious
【简答题】滞后效应(名词解释)
【单选题】Why doesn't Professor Nadehnanne agree that tobacco companies or pharmaceutical companies will come to dominate drug business?
A.
They will make drugs too expensive to be afforded.
B.
They will not raise the price so high in case it should encourage a black market.
C.
They will not make an effort to prevent it from having it sold to children.
D.
The federal tax on tobacco will be doubled or tripled.
【简答题】运动画面的拍摄过程包括__________、__________和落幅。
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