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【单选题】
若两数列的标准差相等而平均数不等，则（ ）A.
代表性也相等
B.
平均数小代表性大
C.
平均数大代表性大
D.
无法判断
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【简答题】Nowadays there is a media trend toward diminishing the importance of fathers in the United States. On the one hand, we have easy access to m________ stories about the struggles of working mothers. On ...
【简答题】Fill in each of the blanks with an appropriate word. Nowadays there is a media trend toward diminishing the importance of fathers in the United States. On the one hand, we have easy access to 1_______...
【简答题】Fill in each of the blanks with an appropriate word. (用适当的词语填空,首字母已经给出) Nowadays there is a media trend toward diminishing the importance of fathers in the United States. On the one hand, we have easy...
【单选题】Having late-life children often means parents, especially fathers have to go on working _____ their retirement age to ensure their financial resources. [ ]
A.
before
B.
until
C.
beyond
D.
after
【简答题】Nowadays there is a media trend toward diminishing the importance of fathers in the United States. On the one hand, we have easy access to 1. ________ stories about the struggles of working mothers. O...
【简答题】Nowadays there is a media trend toward diminishing the importance of fathers in the United States. On the one hand, we have easy access to m__________ stories about the struggles of working mothers. O...
【单选题】低密度的脂蛋白颗粒（LDL)的功能
A.
把血液中胆固醇带走，送到结缔组织的表面受体
B.
把食物中的甘油酸脂和胆固醇从肠道经淋巴管输送到血液，随血液流到肝脏
C.
把体内自身合成的胆固醇转运到肝脏
D.
将甘油酸脂从肝脏输出
【单选题】____是算法效率的度量,是评价算法优劣的重要依据;_____是问题本身的复杂程度,是问题固有的性质。
A.
算法复杂性；问题复杂性
B.
问题复杂性；算法复杂性
C.
算法复杂性；算法复杂性
D.
问题复杂性；问题复杂性
【简答题】（）是算法效率的度量，是评价算法优势的重要依据。
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