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【单选题】
已知关系模式 R ( A , B , C , D , E )及其上的函数依赖集合 F = {A→D , B→C , E→A } ,该关系模式 的候选码是A.
AB
B.
BE
C.
CD
D.
DE
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反馈参考答案：
举一反三
【多选题】创业者应该具备的基本素质和能力 有哪些
A.
良好的身体素质； 强烈的创业意识和激情；
B.
健康的心理素质； 强烈的竞争意识；
C.
诚信为本意识； 坚定的信念；
D.
不畏困难的勇气。
E.
金钱和关系
【简答题】Section B Directions: There are 5 incomplete statements here. You should fill in each blank with the proper form of the word given in the brackets. 31. (See) _____ from space, our earth, with water co...
【单选题】It was not until yesterday ________they decided to re-open the business talk. A) when C) that B) which D) ...
A.
when
B.
which
C.
that
D.
as
【单选题】J. Smith was preparing the December 31 year-end financial statements for her company, Smith’s Used Vehicles. On the December 25, the company sold a car that it had not yet paid for. J. Smith did not r...
A.
separate entity assumption
B.
cost principle
C.
matching principle
D.
full disclosure principle
【单选题】( )it was not ---- he took off his dark glasses ----- i realized he was a famous singer.
A.
when,that
B.
until,that
C.
until,when
D.
when,than
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