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【单选题】
缺铁性贫血的特征是（）A.
红细胞数目肯定明显减少
B.
血红蛋白含量可以不变
C.
血红蛋白含量明显下降
D.
红细胞体积代偿性增大
E.
缺乏造血的原料维生素B12
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【简答题】From
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Cromwell as _______.A. Lord Protector B. Lieutenant General C. Commander of the New Model Army D. President
【简答题】通读下面短文，掌握其大意，然后从短文后面的括号内选出可以填入短文空格处的词。 Peter is a famous writer now. But he was not a 1______ student when he was young. He was often late for 2______ and didn't like doing his homework. Sometimes, he...
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【单选题】Demeter’s daughter Persephone was kidnapped by ______.
A.
Hades
B.
Zeus
C.
Poseidon
D.
Ares
【单选题】From 1649 to 1658 England was called a Commonwealth. It was ruled first by Oliver Cromwell as _______.
A.
Lord Protector
B.
Lieutenant General
C.
Commander of the New Model Army
D.
President
【简答题】SQL Server的约束包括 primary key 约束、 default 约束、 foreign key 约束、 和 。
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