题目内容：
假设消费者张某对X和Y两种商品的效用函数为U=X2Y2，张某收入为500元，X和Y的价格分别为PX=2元，PY=5元，求：张某对X和Y两种商品的最佳组合。参考答案：
选择题：假设消费者张某对X和Y两种商品的效用函数为U=X2Y2，张某收入为500元，X和Y的价格分别为PX=
- 题目分类：西方经济学（本）
- 题目类型：选择题
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She is very nice, but because she has a ________ w
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He __________ for military service against the wis
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The assistant spoke to Edith because she seemed___
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商品边际替代率
商品边际替代率
4.科技兴军是大势所趋，它必将推动我国向世界一流部队转变。对此，我军必须紧跟习近平总书记的指导思想，
4.科技兴军是大势所趋，它必将推动我国向世界一流部队转变。对此，我军必须紧跟习近平总书记的指导思想，加快我军建设向质量效能型和（ ）转变。选择一项：A. 科技