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【多选题】
下列叙述哪些是正确的A.
误差是测量值与均值之间的差异
B.
均值是所有测量值的平均值
C.
标准差是指测定值与均值的离散程度
D.
变异系数是标准差与均值之比
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【简答题】IV. Explain the meanings of the following expressions. (25 points in all, 5 points for each) 1. "political bosses” 2. "the protestant work ethic” 3. "checks and balances” 4. The American Dream 5. The ...
【简答题】19世纪前后到第二次结束，是教育研究方法发展的()时期。
【简答题】The t( ) w( ) are the ten pieces of articles, in Chinese Shiyi, that explain the meanings of the Book of Changes throughout history.
【简答题】Explain the meanings of the following words in English. sphere
【简答题】A. Look up the dictionary and explain the meanings of the italicized words. 1. ...who had declared he would appear at the Croydons' suite ...(Para.1)
【简答题】第二次前后，自然法学、社会学法学和 成为西方法理学的三 大主流法学。
【单选题】According to the author______.
A.
context can often be used to explain the meanings of unfamiliar words
B.
it is not practical to check unfamiliar words with a dictionary
C.
it is not necessary to consult a dictionary when reading in your native language
D.
you usually enjoy guessing the meanings unfamiliar words
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