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【多选题】
可用于原子吸收分光光度计光源的有( )。A.
空心阴极灯
B.
钨灯
C.
高频无极放电灯
D.
蒸气放电灯
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【单选题】听力原文： As a result of rising university costs, many students are finding it necessary to take on part-time jobs. To make finding those jobs easier, the placement services put together a listing of what...
A.
Part time jobs as salesclerks.
B.
Part time jobs as babysitters.
C.
Part time jobs at landscaping teams.
D.
Part time jobs at National Saving Bank.
【单选题】听力原文： As a result of rising university costs, many students are finding it necessary to take on part-time jobs. To make finding those jobs easier, the placement services put together a listing of what...
A.
To interest students in a career in counseling.
B.
To recent counselors to work in the placement of office.
C.
To inform. students of a university program.
D.
To convince local merchants to hire college students.
【简答题】政府税收增加1000亿美元，如果边际消费倾向是0.6，以下项目会发生什么变化?它们增加了，还是减少了?增加或减少了多少? a．公共储蓄 b．私人储蓄 c．国民储蓄 d．投资 The government raises taxes by ＄100 billion. If the marginal propensity to consume is 0.6, what happens to the f...
【单选题】If foreigners spend more on U.S.-made goods and services than we spend on theirs,
A.
foreigners must borrow from the United States or sell U.S. assets to make up the difference.
B.
all U.S. national saving remains in the United States
C.
we must borrow from foreigners because of low imports.
D.
funds flow in from abroad to help finance U.S. investment.
【简答题】贬值常常被各国用来改善其经常项目。因为经常项目等于本国储蓄减去国内投资，所以只有当投资下降、储蓄上升或两者同时发生时这种改善才可能实现。那么。贬值究竟如何影响一国的储蓄和投资呢? Devaluation is often used by countries to improve their current accounts．Since the current account equals nati...
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