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【多选题】
当边际报酬从等于平均报酬变化到边际报酬为零时,( )是正确的。
A.
总报酬单调增加,并且达到最大值
B.
总报酬单调减少,并且达到最小值
C.
平均报酬单调减少
D.
平均报酬单调增加
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