• 2022-06-16
    The problem of scarcity is directly relevant
    A: Only to those periods of history before mass production
    B: Only to those times when rationing has been enforced
    C: To all countries and all individuals
    D: Only to those on low income
  • C

    内容

    • 0

      It was allowed to be used only by those in ______.

    • 1

      中国大学MOOC: In modern China, _______ is the only subject among those four that has not been surpassed by Western science.

    • 2

      The output of a OR gate is LOW only when all its inputs are LOW

    • 3

      Selective retention refers to: A: The tendency to remember only those pieces of information that were presented first. B: The tendency to remember only those pieces of information that were presented last. C: The tendency to remember only those pieces of information which support one’s current beliefs. D: The tendency to remember only those pieces of information that are presented by a person the listener likes.

    • 4

      The problem of "scarcity" applies A: only in industrially developed countries because resources are scarce in these countries. B: only in underdeveloped countries because there are few productive resources in these countries. C: only in economic systems that are just beginning to develop because specialized resources are scarce. D: to all economic systems, regardless of their level of development.