题目内容

边际效用一定大于0。

A. 对
B. 错

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一般情况下,无差异曲线的斜率等于两种商品的效用之比。

A. 对
B. 错

The personresume best fits the needs of the employer will get a call for an interview.A) whoseB) whichC) thatD) who

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B
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D

I am interested in the training course, whichat Hilton Hotel in Beijing from March 8 to 12,2018.A) heldB) was heldC) will holdD) will be held

A
B
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Companies understandably ask: why should I train youyou'll leave and work for my competitors?A) ifB) unlessC) untilD) although

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B
C
D

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