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【单选题】
服用下列哪一种药物可以解除脚气病()A.
维生素A
B.
维生素B1
C.
维生素B6
D.
维生素B2
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反馈参考答案：
举一反三
【简答题】凸轮是一个具有 的构件,是 件,气门是 件。
【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.
i dont know
【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
【简答题】凸轮是一个具有________的构件,是________件,气门是________件。
【单选题】A legal minimum price is set which is above the equilibrium price. What will be the impact of this?
A.
Excess of demand over supply
B.
Excess of supply over demand
C.
Black marketeers may seek to operate
D.
Nothing
【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
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