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【单选题】
在短期内生产中,不会随着产量增加而增加的成本是()A.
总成本
B.
可变成本
C.
不变成本
D.
边际成本
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反馈参考答案：
举一反三
【简答题】图书出版单位与境外出版机构在境内开展合作出版，在合作出版的图书上双方共同署名，须经________批准。
【单选题】Researchers will collect all the following EXCEPT
A.
genetic samples from people in the study.
B.
biological samples from people in the study.
C.
samples from the homes of the women and their babies.
D.
samples of air and water from hospitals.
【单选题】The best title for the text is
A.
Poetic justice.
B.
A vogue for shaming wrongdoers.
C.
Doubtful punishments.
D.
Criminals should be shamed.
【单选题】In my opinion, all Mr. White ___ good to his students in his class at present. He is very strict in their study.
A.
does does does
B.
does do do
C.
does does do
D.
did do does
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