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【单选题】
下列关于盐酸乙胺丁醇的描述,不正确的是( )A.
乙胺丁醇羟基在体内代谢为醛，可进一步氧化为酸，均失去活性
B.
右旋体活性好于左旋体
C.
分子中含2个手性碳，故有4个光学异构体。
D.
为抗结核药物，多与异烟肼、链霉素合用
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举一反三
【简答题】Among other things, the story shows that
【单选题】El término ' prehispánico ' se refiere a...
A.
La historia antes del nacimiento de Jesucritsto (a.C.)
B.
La historia de España antes de la expansión de Roma
C.
Las cultura asiáticas antes de su contacto con las potencias europeas
D.
Las culturas americanas antes de tener contacto con el imperio español
【单选题】Other things constant, a decrease in the supply of money balances with a given money demand results in______in the equilibrium quantity of money balances held.
A.
a reduction in the equilibrium interest rate and an increase
B.
an increase in the equilibrium interest rate and a reduction
C.
no change in the equilibrium interest rate but a decrease
D.
an increase in the equilibrium interest rate but no change
【简答题】在计算机系统中,1MB=【1】KB.
【单选题】Other things the same, if the U.S. price level falls, then
A.
U.S. residents want to buy more foreign bonds. The real exchange rate rises.
B.
U.S. residents want to buy more foreign bonds. The real exchange rate falls.
C.
U.S. residents want to buy fewer foreign bonds. The real exchange rate rises.
D.
U.S. residents want to buy fewer foreign bonds. The real exchange rate falls.
【单选题】Which of the following is likely to cause a decrease in the equilibrium U.S. interest rate, other things being equal?
A.
a decrease in savings by foreign savers
B.
an increase in inflation
C.
pessimistic economic projections that cause businesses to reduce expansion plans
D.
a decrease in savings by U.S. households
【简答题】Among other things,a bank statement tells you
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