题目内容

斯密和李嘉图都没有抽象的劳动的概念。()

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How did the old man respond to Rossetti s negative comment?

A. He was angry and desperate.
B. He was surprised and disappointed.
C. He was discouraged, but took it calmly.
D. He was hurt, but could do nothing about it.

在远程运输机上设置空中放泊系统的主要目的在于:

A. 到达目的机场上空时放掉多于燃油,以便以较轻的重量着陆
B. 起飞后发生紧急情况时放掉过多燃油,以便能够返场或到备降场着陆
C. 飞行中放掉油量较多一边机翼油箱的燃油,以保持飞机横向平衡
D. 以上都对

提供曲线,是指一个国家为了获得一定数量的进口产品所愿意提供的出口产品的数量。()

两国进行贸易时,贸易条件等于较小国家贸易前的现行国内价格比()
参考答案:错误

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