【单选题】【消耗次数：1】
要求不低于目标值，其目标函数是（）。
①
maxZ=d
②
-maxZ=d+
③
minZ=d
④
-minZ=d+
参考答案：
复制
纠错
相关题目
【单选题】
恰好完成第二目标值，目标函数是（）。
①
minZ=p1d-1+p2(d-2+d+2)
②
minZ=p1d+1+p2(d-2-d+2)
③
minZ=p1d+1+p2(d-2+d+2)
④
minZ=p1d-1+p2(d-2-d+2)
【单选题】
设有关系模式R(S，D，M，A,T)，其函数依赖集：F＝{S→D，D→M, A→T }，则关系模式最高满足（ ）。
①
A.1NF
②
B.2NF
③
C.3NF
④
D.BCNF
随机题目
【单选题】
__________ my love of landscape, nothing could persuade me to spend another day in the Highlands.
①
But for
②
For all
③
Above
④
Except for
【单选题】
Food was in short __________ ; women stood in line for hours for a bucket of drinking water.
①
store
②
provision
③
reserve
④
supply
【单选题】
His parents __________ him the opportunity to go to university.
①
ignored
②
neglected
③
refused
④
denied
【单选题】
Graceland, Elvis Presley’s former home, is now a tourist __________ that draws more than 600,000 visitors every year.
①
store
②
attraction
③
appointment
④
arrangement
【单选题】
Great changes __________ in our institute in the last few years.
①
have taken place
②
has taken place
③
took place
④
had taken place
【单选题】
-- Sorry I kept you waiting.
①
I’m sad
②
I don’t care
③
That’s all right. There’s no hurry
④
No, not at all
【单选题】
You have lovely children.
①
No, no, no. They are not
②
Oh, no, no
③
You’re talking too much
④
Thanks