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【单选题】
楼梯、钢梯、平台均应采取防滑措施。直钢梯高度超过()m时,护笼,以防上、下梯子时坠落。A.
2
B.
5
C.
3
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举一反三
【单选题】A basic characteristic of the firms in an oligopoly market structure is that they are:
A.
large (relative to the total market) and interdependent.
B.
large (relative to the total market) and independent.
C.
small (relative to the total market) and interdependent.
D.
small (relative to the total market) and independent.
【单选题】Which market structure is characterized by many sellers, easy entry, and homogeneous products
A.
perfect competition
B.
monopolistic competition
C.
oligopoly
D.
monopoly
【单选题】Failure by market structure is caused by:
A.
positive spillover effects.
B.
positive externalities.
C.
negative externalities.
D.
none of these.
【单选题】Market structure is not typically characterized on the basis of:
A.
the number and size distribution of active buyers and sellers.
B.
potential entrants.
C.
exit barriers.
D.
government regulation.
【单选题】Funny animals is a term used in comics and animated cartoons __________ the animals are given human characteristics.
A.
where
B.
that
C.
why
D.
as
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