[单选题]当满足条件：（ ）时，戈珀兹曲线呈S曲线形状，适用于描述耐用商品的市场需求变化，也是较多地应用于市场预测的一种曲线类型。
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2023-11-01 15:04:15|
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[单选题]当满足条件：（ ）时，戈珀兹曲线呈S曲线形状，适用于描述耐用商品的市场需求变化，也是较多地应用于市场预测的一种曲线类型。
A.a>1，且b>1
B.a>1，且0<b<1
C.0<a<1且b>1
D.0<a<1且0<b<1
A.a>1，且b>1
B.a>1，且0<b<1
C.0<a<1且b>1
D.0<a<1且0<b<1
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