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【单选题】
关于关系模型,下列叙述不正确的是A.
一个关系至少要有一个候选码
B.
列的次寻可以任意交换
C.
行的次序可以任意交换
D.
一个列的值可以来自不同的域
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【单选题】关于证券公司从业人员持有股票的相关规定,下列说法正确的是( )。
A.
从业人员可以他人名义持有、买卖股票
B.
从业人员不能收受他人赠送的股票
C.
从业人员可以以化名持有、买卖股票
D.
从业人员可以直接持有、买卖股票
【简答题】下列各化合物晶体中，既存在有离子键又有共价键的是哪些? (1)NaOH (2)Na2S (3)CaCl2 (4)Na2SO4 (5)MgO
【简答题】阅读理解。 In China, many young people like playing soccer. It's very popular. But the Chinese don't call it soccer. They call it football. Are they different? In fact, there are two kinds of football ...
【单选题】Which statement below is correct in appropriateness of dressing for a job interview?
A.
The clothes must be properly fit, but never overdressed.
B.
It is acceptable for a woman to wear a mini-skirt.
C.
Wearing a hat is considered to be a lack of confidence.
D.
No jewelry or accessory should be put on.
【简答题】(b) Advise Sergio on the appropriateness of investing in a domestic rental property in view of his personal circumstances and recommend suitable alternative investments giving reasons for your advice....
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