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【单选题】
下列不属于世界三大宗教的是（ ）A.
道教
B.
佛教
C.
基督教
D.
伊斯兰教
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举一反三
【单选题】If a price ceiling is a binding constraint on the market,
A.
the equilibrium price must be below the price ceiling.
B.
the equilibrium price must be above the price ceiling.
C.
the forces of supply and demand must be in equilibrium.
D.
it will have no effect on supply or demand.
【单选题】If a price ceiling is set above the equilibrium price, then
A.
there will be a surplus of the good.
B.
there will be a shortage of the good.
C.
there will be neither a shortage nor a surplus of the good.
D.
the price ceiling will generate revenue for the government.
E.
the price ceiling affects suppliers but not demanders.
【单选题】If a price ceiling is not binding, then
A.
there will be a surplus in the market.
B.
there will be a shortage in the market.
C.
the market will be less efficient than it would be without the price ceiling.
D.
there will be no effect on the market price or quantity sold.
【单选题】If a price ceiling is not binding,
A.
the equilibrium price is above the ceiling.
B.
the equilibrium price is below the ceiling.
C.
it has no legal enforcement mechanism.
D.
people must voluntarily agree to abide by it.
【单选题】有关超声生物显微镜(UBN)的描述,错误的是( )
A.
它是50Hz的高频率分辨率的B超
B.
用于眼前段的疾病辅助诊断
C.
其因穿通力高可用于眼后节疾病辅助诊断
D.
它对闭角型青光眼、恶性青光眼诊断有意义
E.
有利于对眼前段肿瘤诊断
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