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【单选题】
在体积 1m 3 的完全饱和土体中,水的体积占 0.6m 3 ,该土的孔隙比等于( )
A.
0.4
B.
0.6
C.
1.5
D.
2.5
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举一反三
【单选题】When economists speak of markets, they primarily mean:
A.
places where production of goods and services take place.
B.
those locations where stocks and bonds of corporations take place.
C.
mechanisms that coordinate actions of buyers and sellers.
D.
the trillions of dollars that change hands in the foreign exchange markets.
【单选题】下列关于滴丸剂的叙述不正确的是:
A.
发挥药效迅速,生物利用度高
B.
滴丸在药剂学上又称胶丸
C.
可将液体药物制成固体滴丸,便于运输
D.
生产设备简单、操作方便、便于劳动保护
【单选题】When economists use the term "ceteris paribus," they mean that:
A.
the causal relationship between two economic variables cannot be determineD.
B.
the analysis is true for the individual but not for the economy as a whole.
C.
all other variables except the ones specified are assumed to be constant.
D.
their conclusions are based on normative rather than positive economic analysis.
【单选题】When economists measure economic growth, they often use:
A.
the inflation rate.
B.
the unemployment rate.
C.
nominal GDP.
D.
real GDP.
【单选题】Economists define a market to be competitive when the firms
A.
spend large amounts of money on advertising to lure customers away from the competition.
B.
are price takers.
C.
watch each other's behavior closely.
D.
All of the above.
【单选题】When economists are trying to help improve the world they are
A.
concerned with positive economics.
B.
policy advisors.
C.
scientists.
D.
meddling.
【单选题】中华医学会全科医学分会成立于()
A.
1969年
B.
1986年
C.
1972年
D.
1993年
E.
1997年
【单选题】Economists say that investment occurs when
A.
someone buys stock on the New York Stock Exchange.
B.
someone buys a U.S. government bond.
C.
a firm increases its capital stock.
D.
a government buys goods from another country.
【多选题】(多选题)以下属于中国四大园林的是( )。
A.
北京颐和园
B.
北海公园
C.
承德避暑山庄
D.
苏州拙政园
E.
苏州留园
【单选题】When economists are trying to explain the world they are
A.
scientists.
B.
policy advisors.
C.
in the realm of normative economics.
D.
in over their heads.
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