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【单选题】
右边图有一一个尺寸标注错误,下面相关说法哪-一个正确?A.
在主视图中标注半径， 由于中心点的已经标出来了，所以尺寸值前面不允许有R
B.
螺纹参数M6必须标在
C.
角度数据90*的尺寸辅助线必须与物体边成直角
D.
尺寸8-0.3缺另外一个极限偏差(上极限偏差)
E.
12上必须有直径符号
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皮皮学刷刷变学霸
举一反三
【单选题】Classical growth theory proposes that real GDP growth is ________ and that real GDP per person will ________ the subsistence level.
A.
permanent; temporarily be above
B.
permanent; always be above
C.
temporary; temporarily be above
D.
temporary; be above and below
【单选题】Classical growth theory argues that when real GDP per person rises above the subsistence level,
A.
technological change slows down, stagnating the economy.
B.
population growth increases, driving real GDP per person back to subsistence level.
C.
people don't want to work as much, decreasing labor supply.
D.
the economy enjoys a period of permanent growth.
【单选题】According to neoclassical growth theory, the higher real GDP per person from economic growth will
A.
not last because the population will increase.
B.
last because there is no link between growth and population.
C.
last indefinitely regardless of any other factor.
D.
last as long as technological change continues.
【单选题】Real GDP ______ over time and the growth rate of real GDP ______.
A.
grows; fluctuates
B.
is steady; is steady
C.
grows; is steady
D.
is steady; fluctuates
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