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【单选题】
规模报酬递减是在下述情况下发生的A.
按比例连续增加各种生产要素
B.
不按比例连续增加各种生产要素
C.
连续投入某种生产要素，而保持其他生产要素不变
D.
其他选项都不正确。
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反馈参考答案：
举一反三
【单选题】Good students are the ones who ...
A.
are able to maintain a balanced life.
B.
have other interests.
C.
are good company for their classmates.
D.
are keen on learning.
【单选题】Look! Jack and his monkey ______ flying disk together in the garden.
A.
is playing
B.
was playing
C.
are playing
D.
were playing
【简答题】Look at the following office layout. Mary is at the company gate. Please tell her how to find Mike and Jack in the office.
【简答题】Look at the above office layout . Mary is at the company gate. Please tell her how to find Mike and Jack in the office。
【简答题】Look at the above office layout again. Mary is at the company gate. Please tell her how to find Mike and Jack in the office.
【单选题】Mary wants to be a teacher． She’s going to get_________ ．
A.
good grade
B.
good grades
C.
well grade
D.
well grades
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