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【简答题】
轴环的用途是 ( ) 。 A .作为加工时的轴向定位 B.使轴上零件获得轴向定位 C .提高轴的强度 D. 提高轴的刚度
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举一反三
【单选题】According to Thomas Malthus's work, which of the following is TRUE?
A.
As population grew, so would output per worker.
B.
The amount of capital per worker would fall.
C.
Technology could be counted on to increase output per worker.
D.
The amount of land per worker would ually decline.
【单选题】Thomas Malthus suggested that population growth ____________________.
A.
and the land's potential to produce food would grow at the same rate
B.
would lead to strong and better societies
C.
would grow at a slower rate than land's potential to produce food
D.
would ually lead to starvation and death as it exceeded the land's potential to produce food
【单选题】According to the classical growth theory of Thomas Malthus,
A.
labor productivity increases continuously.
B.
the population growth rate is fixed.
C.
technological advances lead to permanent increases in real GDP per person.
D.
increases in real GDP per person are only temporary.
【简答题】Thomas Malthus published his Essay on the Principle of Population almost 200 years ago. Ever since then, forecasters have being warning 【M1】 ______ that worldwide famine was just around the next comer...
【简答题】Thomas Malthus was an Anglican clergyman.
【单选题】Thomas Robert Malthus believed that population growth would
A.
put stress on the economy’s ability to produce food, dooming humans to remain in poverty.
B.
spread the capital stock too thinly across the laborforce, lowering each worker’s productivity.
C.
promote technological progress, because there would be more scientists and inventors.
D.
ually decline to sustainable levels, as birth control improved and people had smaller families.
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