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【单选题】
Which of the factors listed below might cause the Ricardian equivalence proposition to be violated?A.
There may be international capital inflows and outflows.
B.
Consumers may not understand that an increase in government borrowing today is likely to lead to higher future taxes.
C.
There may be constraints on the level of government spending.
D.
There may be constraints on the level of government taxation.
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举一反三
【单选题】某未知气体样品重10g，在温度为373K，压力为290.8kPa时的体积是1.72dm 3 ，该未知物气体的摩尔质量是( )。
A.
42
B.
52
C.
62
D.
72