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【单选题】
无差异曲线上任一点商品X、Y的边际替代率等于它们的:A.
A．价格之比；
B.
B．数量之比；
C.
Ｃ．边际效用之比；
D.
Ｄ．边际成本之比。
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举一反三
【单选题】There is a word missing from the following sentences. For each sentence choose the word which best fits into the space from the options provided. (1) The occupier of a building, such as a retailer or ...
A.
grounds
B.
locations
C.
sites
D.
premises
【单选题】The occupier of a building, such as a retailer or a bank, is often liable for the safety of any visitor to those (1)…
A.
grounds
B.
locations
C.
sites
D.
premises
【单选题】(1) The occupier of a building, such as a retailer or a bank, is often liable for the safety of any visitor to those (1) ...
A.
grounds
B.
locations
C.
sites
D.
premises
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