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问题 单项选择题

设关系R，S和T分别如下图所示。则有[*]

A．T＝RUS

B．T=R—S

C．T=R×S

D．T=R∞S

答案

参考答案：D

解析：这是一个连接运算，通过关系代数运算可以得出结论。

多项选择题

下列有关基金托管人内部控制的说法，正确的有（）。

A.基金托管人应建立定期稽核检查制度

B.风险评估是基金托管人内部控制的基本要素之一

C.为了保证节约与效率，基金托管人内部可不设监察稽核部门

D.在确保风险控制的前提下，基金托管人可以将托管的不同基金的资金账户进行合并
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问答题

Directions:

You recently bought an item of clothing in another town, but found some problems with it after you returned home. Write a letter to the manager and say

· what happened

· what the problems are

· what you would like them to do.

Write your letter in no less than 100 words. Write it neatly on ANSWER SHEET 2.

Do not sign your own name at the end of the letter; use " Li Ming " instead. Do not write the address.
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