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【单选题】
《动物检疫合格证明》（产品A）的到达时效：视运抵到达地点所需时间填写，最长不得超过（）日,用汉字填写。
A.
当
B.
五
C.
七
D.
三十
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A.
正确
B.
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【判断题】Set a minimum price you would pay for the item in your mind before you begin to bargain.
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正确
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【单选题】世界上最早的输送带诞生于（）。
A.
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B.
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C.
20世纪中期
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【单选题】A minimum wage set above the equilibrium wage rate is a price
A.
ceiling that results in a shortage of low-skilled labor.
B.
ceiling that results in a surplus of low-skilled labor.
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floor that results in a shortage of low-skilled labor.
D.
floor that results in a surplus of low-skilled labor.
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【单选题】A legal minimum price is set which is below the equilibrium price. What will be the impact of this?
A.
Excess of demand over supply
B.
Excess of supply over demand
C.
Nothing
D.
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【单选题】A legal minimum price is set which is below the equilibrium price. What will be the impact of this?
A.
Excess of  demand over supply
B.
Excess of  supply over demand
C.
Excess of  demand over supply
D.
Nothing
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【单选题】A legal minimum price is set which is below the equilibrium price. What will be the impact of this?
A.
Excess of demand over supply
B.
Excess of supply over demand
C.
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D.
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【单选题】A legal minimum price is set which is above the equilibrium price. What will be the impact of this?
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Excess of  demand over supply
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Excess of  supply over demand
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Black marketeers may seek to operate
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【单选题】A legal minimum price is set which is below the equilibrium price. What will be the impact of this?
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Excess of demand over supply
B.
Excess of supply over demand
C.
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【单选题】A legal minimum price is set which is below the equilibrium price. What will be the impact of this?
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