【单选题】【消耗次数：1】
将数字向上舍入到接近的偶数的函数是（）。
①
A.EVE
②
B.ODD
③
C.ROUND
④
D.TRUNC
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相关题目
【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（ ）。
①
A.AB
②
B.BE
③
C.CD
④
D.DE
【单选题】
设一个关系为R(A,B,C,D,E),它的最小函数依赖集为FD={A→B,B→C, B→D ,D →E},则该关系的候选码为（ ）。
①
(A,B)
②
(A,D)
③
A
④
B
【单选题】
设一个关系为R(A,B,C,D,E),它的最小函数依赖集为FD={A→B,A→C, (C,D) →E},则该关系的候选码为（ ）。
①
(A,C)
②
(C,D)
③
(A,D)
④
(B,D)
【单选题】
设一个关系为R(A,B,C,D,E)，它的最小函数依赖集为FD={A→B,C→D,(A,C)→E}，则该关系的候选码为（ ）。
①
(A,B)
②
(A,C)
③
(A,D)
④
(A,E)
【单选题】
设一个关系为R(A,B,C,D,E),它的最小函数依赖集为FD={A→B,C→D,(A,C) →E},则该关系的候选码为（ ）。
①
(A,B)
②
(A,C)
③
(A,D)
④
(A,E)
【单选题】
下列程序执行后的输出结果是
#includevoid main( )
{ int a=5,b=60,c;
if (ab)
{c=a*b;printf(%d*%d=%d\n,b,a,c);}
else
{c=b/a;printf(%d/%d=%d\n,b,a,c);}
}
①
60/5=12
②
300
③
60*5=300
④
12
随机题目
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A: Do you know that Tony quarreled with his brother? B: I dont know,[填空].
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nor dont I care
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nor do I care
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I dont care neither
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I dont care also
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A: Sorry to give you so much trouble. B: [填空].
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OK. With great pleasure
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Oh, really? Thats OK
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Dont worry about it
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Im sorry to hear that
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A: What do you have in mind? B: Im thinking about jewelry or something valuable. A: Weve got beautiful jewelry here. If youre interested, [填空].
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I can show you
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you can see it
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you should buy it
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Ill get it
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Are you doing anything then?
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Wed love to have you around.
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Itll be a lot of fun.
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Have you heard about it?
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They remember seeing you once
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I am afraid they have poor memories
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You can contact them directly
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Thanks a lot. I will
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No, nothing
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Well, now that you ask
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Nothing I can think of
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If you ask me
【单选题】
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①
Its good for you
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Thats right
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Its thoughtful of you
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Thats fine with me
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A: Mr. Wang, Im very much impressed. Theres no need for further questions. B: [填空].
①
Really? Thats great
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Sorry, I didnt mean to bother you
③
Thank you for your time
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Its my pleasure
【单选题】
A: Id like to ask you a question. B: [填空]
①
Yes, go ahead.
②
Sorry, Im kind of busy.
③
OK, whats up?
④
Yeah, whats on your mind?
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①
Whos that
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Whats wrong
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May I help you
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Whats up