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【单选题】
牛黄表面挂有一层黑色光亮的薄膜,()。A.
乌金衣
B.
当门子
C.
D.
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】If the elasticity of demand for mothballs is 0.50, then moving along the demand for mothballs:
A.
A 20% rise in the price of mothballs will lead to a 10% fall in the quantity of mothballs demanded.
B.
A 10% rise in the price of mothballs will lead to a 20% fall in the quantity of mothballs demanded.
C.
A 20% rise in the price of mothballs will lead to a 10% rise in the quantity of mothballs demanded.
D.
A 10% rise in the price of mothballs will lead to a 20% rise in the quantity of mothballs demanded.
【单选题】Moving along the short-run Phillips curve indicates
A.
that higher inflation leads to a higher unemployment rate.
B.
that higher unemployment leads to a higher inflation rate.
C.
a tradeoff between inflation and unemployment so that higher inflation is related to lower unemployment.
D.
that the natural unemployment rate falls when the inflation rate rises.
【单选题】A __________ is a firm that participates in moving the product along the distribution channel.
A.
financial intermediary
B.
production specialist
C.
sales consultancy
D.
marketing intermediary
【单选题】A __________ is a firm that participates in moving the product along the distribution channel.
A.
financial intermediary
B.
production specialist
C.
marketing conduit
D.
marketing intermediary
E.
sales expediter
【简答题】PN结反偏时,内电场与外电场的方向 ,空间电荷区变 ,有利于 载流子的漂移运动,阻碍 载流子的扩散运动,此时 PN结呈现的电阻 , PN结处于 状态。
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