【单选题】Pure monopoly is characterized by
A.
many firms that produce a homogeneous product
B.
many firms that produce slightly different products that are close substitutes
C.
such a small number of firms that each must figure out how the others will respond to its own actions
D.
one firm, with no competitors, that produces a product with no close substitutes
【单选题】1946年政协会议的决议很快被国民政府撕毁,主要是因为( )
【单选题】Pure monopoly:
A.
is characterized by a single supplier.
B.
is a market structure in which no close substitute products are available.
C.
exists when entry and survival of potential competitors is extremely unlikely.
D.
is characterized by all of the above.
【判断题】在向遇险航空器事故的幸存者提供援助时,缔约国可以对本国公民提供优先救护待遇
【多选题】驱动电机型号由驱动电机类型代号、( )等部分组成。
【判断题】住房公积金是按照应发工资的一定比例计算的。
【判断题】在向遇险航空器事故的幸存者提供援助时,缔约国可以对本国公民提供优先救护待遇。