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【判断题】
电磁波在多层介质中传播时,等效波阻抗定义为:在界面平行的任意平面上,总电场强度和总磁场强度的正交分量之比。A.
正确
B.
错误
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举一反三
【单选题】If a liquidity trap does exist, then ______ policy will not be effective in increasing income when interest rates reach very ______ levels.
A.
monetary; high
B.
monetary; low
C.
fiscal; high
D.
fiscal; low
【简答题】若行列式中每一列的元素之和均为零，是否可以断言该行列式的值为零?
【单选题】LM schedule shows various combinations of the level of income and interest rate when?
A.
Money demand = Money supply
B.
Level of income
C.
Money demand
D.
Level of income = Interest rate 判断题
【单选题】When real income falls, the demand curve for money shifts to the _____ and the interest rate _____.
A.
left; rises
B.
left; falls
C.
right; rises
D.
right; fall
【单选题】What happens when interest rates rise?
A.
Discretionary income increases
B.
The demand for discretionary goods increases
C.
Discretionary income is unchanged
D.
The demand for discretionary goods decreases
E.
Discretionary income increases and the demand for discretionary goods decreases
【简答题】总分类账一般采用订本账，明细分类账一般采用活页账。（ ）
【单选题】When interest income is taxed and the inflation rate rises, the tax revenue collected by the government
A.
increases.
B.
doesn't change.
C.
decreases.
D.
could either increase or decrease.
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