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【判断题】
原问题有5个决策变量，则其对偶问题也一定有5个决策变量。A.
正确
B.
错误
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】— Your Chinese is so good! — But your English is better. So you can teach me English and I can teach you Chinese. — _____ [ ]
A.
What a pity!
B.
That's a deal!
C.
The same to you!
D.
I' m sorry to hear that.
【单选题】— Helen, your English is pretty good. How can I improve my English? —I think you can improve your English ______ reading more.
A.
at
B.
by
C.
on
D.
for
【单选题】-Your English is very good. - _________ [ ]
A.
Thank you
B.
Not very good
C.
No, my English is poor
D.
Don't say so
【简答题】Do you think your English is good? How to improve your English communication competence?
【简答题】Does this situation seem familiar to you？Your English is progressing well，the grammar is now familiar，the reading comprehension is no problem，and you are speaking quite fluently.____1__ First of all，r...
【简答题】Does this situation seem familiar to you? Your English is progressing well, the grammar is now familiar, the reading comprehension is no problem, and you are speaking quite fluently. _ 小题1: First of a...
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