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【判断题】
非系统风险包括政策风险、经济周期波动风险、利率风险和购买力风险
A.
正确
B.
错误
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【简答题】Read the following paragraphs carefully and write a topic sentence for each paragraph. 1. Famous inventor Thomas Edison, for instance, did so poorly in his first years of school that his teacher warne...
【单选题】He did poorly in his examination,______ how hard he had studied for them.
A.
considering
B.
to consider
C.
thinking
D.
regarding
【单选题】He did poorly in his examinations, ______ how hard he had studied for them.
A.
considering
B.
to consider
C.
thinking
D.
regarding
【单选题】He did poorly in his examinations, ______ how hard he had studied for them.
A.
considering
B.
to consider
C.
regarding
D.
to regard
【单选题】He did poorly in his examination, ______ how hard he had studied for them.
A.
considering
B.
to consider
C.
regarding
D.
to regard
【单选题】在关系模式中,实现“关系中不允许出现相同的元组”的约束是()约束。
A.
候选键
B.
主键
C.
D.
任一键
【单选题】在关系模式中,实现“关系中不允许出现相同的元组”的约束是( )。
A.
候选键
B.
主键
C.
D.
任一键
【简答题】若x,ij和k都是int型变量,则计算表达式x=(i=4,j=16,k=32)后,X的值为( )。 A)4 B)16 C)32 D)52
【单选题】若x,i,j和k都是int型变量,则执行下面表达式后X的值为()
A.
32
B.
4
C.
16
D.
52
【单选题】在关系模式中,实现“关系中不允许出现相同的元组”的约束是:
A.
候选键约束
B.
主键约束
C.
外键约束
D.
任意键约束
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