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【单选题】
余热的品质按其温度可分为几个级别 ?A.
一个级别
B.
两个级别
C.
三个级别
D.
四个级别
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【简答题】在账务处理系统进行科目设置时，设置的会计科目代码可以不必是唯一的。（ ）
【单选题】A country’s balance of payments records:
A.
the prices that a country pays for its imports and the prices that the country receives for its imports.
B.
the flows of value between that country’s residents and residents of the rest of the world during a period of time.
C.
capital gains and losses on a country’s international assets.
D.
the value of a country’s holdings of foreign assets, minus the value of foreign holdings of the country’s assets.
【单选题】According to the relative PPP, if country A’s inflation rate is higher than country B’s inflation rate by 3%, __________.
A.
country A’s currency should depreciate against country B’s currency by 3%
B.
country A’s currency should appreciate against country B’s currency by 3%
C.
it is hard to say whether country A’s currency should appreciate or depreciate against country B’s currency. The exchange rate is influenced by many factors
D.
none of the above is true
【简答题】在等倾干涉实验中，若照明光波的波长λ=600nm，平板的厚度h=2mm，折射率n=1．5，其表面镀高折射率介质(nH＞1．5)。 (1)在反射光方向观察到的圆条纹中心是暗还是亮? (2)由中心向外计算，第10个亮纹的半径是多少?(观察望远镜物镜的焦距为20cm) (3)第10个亮环处的条纹间距是多少?
【单选题】When a country's currency appreciates, the country's goods abroad become______and foreign goods in that country become______.
A.
cheaper...more expensive
B.
more expensive...cheaper
C.
cheaper...cheaper
D.
more expensive...more expensive
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