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【多选题】
数据库的完整性是存储在数据库中的数据的()和()。A.
一致性
B.
准确性
C.
完整性
D.
冗余性
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【单选题】... a new generation of Americans, born in this century, tempered by war, disciplined by a hard and bitter peace,...
A.
strengthened
B.
regulated
C.
alleviated
D.
trained
【简答题】...a new generation of Americans, born in this
century, tempered by the war, disciplined by a hard and bitter peace ...
【单选题】—How old is your daughter? —_____. He spent his _____ birthday the day before yesterday. [ ]
A.
Twelve, twelve
B.
Twelfth, twelve
C.
Twelfth, twelfth
D.
Twelve, twelfth
【简答题】－How old is your daughter ? － . We had a special party for her party yesterday . A. Nine , nine. B. Nine , ninth . C. Ninth , ninth .
【单选题】玻尔兹曼统计认为：
A.
玻尔兹曼分布不是最可几分布但却代表平衡分布;
B.
玻尔兹曼分布只是最可几分布但不代表平衡分布;
C.
玻尔兹曼分布不是最可几分布也不代表平衡分布;
D.
玻尔兹曼分布就是最可几分布也代表平衡分布。
【单选题】对于玻尔兹曼分布,说法不正确的是
A.
对于玻尔兹曼分布，高能级粒子数密度总是多于低能级粒子数密度。
B.
玻尔兹曼分布是一种动态分布
C.
玻尔兹曼分布是一种统计分布
D.
玻尔兹曼分布是热平衡条件下的分布
【单选题】Your daughter is old enough to look after herself: I think you are _______________ about her.
A.
overloaded
B.
overworked
C.
overanxious
D.
overpraised
【简答题】试证明：玻尔兹曼分布的涨落为 .
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