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【单选题】
关于相对误差错误的说法是( )。A.
是一个比值
B.
能反映误差的大小和方向
C.
能确切反映测量的精确程度
D.
以上说法都不对
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【单选题】Suppose a country abandons a no-trade policy in favor of a free-trade policy. If, as a result, the domestic price of pistachios decreases to equal the world price of pistachios, then
A.
that country becomes an importer of pistachios.
B.
that country has a comparative advantage in producing pistachios.
C.
at the world price, the quantity of pistachios supplied in that country exceeds the quantity of pistachios demanded in that country.
D.
All of the above are correct.
【简答题】Suppose m is integer,if a=(4,m), b=(-2m,4),OA→=a+2b,OB→=2a-b, |OA→|=|OB→|, then the area of the △OAB is ___.
【简答题】音的物理属性,即音的四大要素是什么?— ,—,—,—。
【单选题】Suppose policy makers decide to reduce taxes. This fiscal policy action will cause which of the following to occur?
A.
The LM curve shifts and the economy moves along the IS curve.
B.
The IS curve shifts and the economy moves along the LM curve.
C.
Both the IS and LM curves shift.
D.
Neither the IS nor the LM curve shifts.
E.
Output will change causing a change in money demand and a shift of the LM curve.
【单选题】31) Suppose policy makers decide to reduce taxes. This fiscal policy action will cause which of the following to occur?
A.
The LM curve shifts and the economy moves along the IS curve.
B.
Output will change causing a change in money demand and a shift of the LM curve.
C.
Both the IS and LM curves shift.
D.
Neither the IS nor the LM curve shifts.
E.
The IS curve shifts and the economy moves along the LM curve.
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