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【多选题】
()是离均差平方的算术平均数的平方根,它是测量数据离散程度最主要的方法。
A.
标准差
B.
均方差
C.
平均差
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B.
错误
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A.
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B.
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C.
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【单选题】“I have a dream that one day every valley shall be exalted, every hill and mountain shall be made low, the rough places will be made plain, and the crooked places will be made straight, and the glory ...
A.
Transferred epithet
B.
Biblical allusion
C.
Personification
D.
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A.
正确
B.
错误
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【单选题】Every vessel shall at all times maintain a proper lookout( )
A.
By sight
B.
By sight and hearing
C.
By sight and hearing as well as by all available means appropriate to the prevailing Circumstances
D.
By sight and hearing as well as by all available means except smelling
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【单选题】What is the meaning of “shall “in the sentence of “Every competitor shall wear a number.”?
A.
need
B.
must
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【单选题】抓住了( ),就抓住了牵动经济社会发展全局的关键。
A.
科技
B.
文化
C.
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D.
创新
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【单选题】One of our rules is that every student ____ wear school uniform while at school.
A.
shall
B.
could
C.
might
D.
will
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【判断题】数量指标可以用数值表示,质量指标不能用数值表示。
A.
正确
B.
错误
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【单选题】One of our rules is that every student ____ wear school uniform while at school.
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【判断题】数量指标可以用数值表示,质量指标不能用数值表示。
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